@Article{	  Aalbersberg-Ehrenfeucht-Rozenberg:86,
  author	= {Aalbersberg, I. J. and Ehrenfeucht, A. and Rozenberg, G.},
  title		= {On the Membership Problem for Regular {DNLC} Grammars},
  journal	= {Discrete Applied Mathematics},
  volume	= {13},
  pages		= {79--85},
  year		= {1986},
  added		= {1996-03-28-11-35-01}
}

@Article{	  Aalbersberg-Engelfriet-Rozenberg:90,
  author	= {Ijsbrand Jan Aalbersberg and Joost Engelfriet and Grzegorz
		  Rozenberg},
  title		= {The Complexity of Regular {DNLC} Graph Languages},
  journal	= {Journal of Computer and System Sciences},
  volume	= {40},
  pages		= {376--404},
  year		= {1990},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Abe-Mizumoto-Toyoda.ea:73,
  author	= {N. Abe and M. Mizumoto and J.-I. Toyoda and K. Tanaka},
  title		= {Web Grammars and Several Graphs},
  journal	= {Journal of Computer and System Sciences},
  volume	= {7},
  pages		= {37--65},
  year		= {1973},
  added		= {1996-03-13-10-09-20}
}

@Book{		  Adamek-Herrlich-Strecker:90,
  author	= {Ji\u{r}\'i Ad\'amek and Horst Herrlich and George Strecker},
  title		= {Abstract and Concrete Categories},
  year		= {1990},
  publisher	= {John Wiley},
  address	= {New York},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Alberich-Burmeister-Rossello.ea:96,
  author	= {Alberich, R. and Burmeister, P. and Rossell{\'o}, F. and
		  Valiente, G. and Wojdyto, B.},
  title		= {A Partial Algebras Approach to Graph Transformation},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {1--15},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@TechReport{	  Alpern-Carle-Rosen,
  author	= {B. Alpern and A. Carle and B. Rosen},
  title		= {Incremental evaluation of attributed graphs},
  number	= {CS 87-29},
  publisher	= {Brown University},
  added		= {1996-08-02-14-49-29}
}

@Book{		  Anderson:70,
  author	= {S. Anderson},
  title		= {Graph Theory and Finite Combinatorics},
  year		= {1970},
  publisher	= {Markham},
  address	= {Chicago},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Andries-Engels-Habel.ea:96,
  author	= {Marc Andries and Gregor Engels and Annegret Habel and
		  Berthold Hoffmann and Hans-J{\"o}rg Kreowski and Sabine
		  Kuske and Detlef Plump and Andy Sch{\"u}rr and Gabriele
		  Taentzer},
  title		= {Graph Transformation for Specification and Programming},
  year		= {1996},
  note		= {In preparation},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Andries-Engels-Habel.ea:96b,
  author	= {Marc Andries and Gregor Engels and Annegret Habel and
		  Berthold Hoffmann and Hans-J{\"o}rg Kreowski and Sabine
		  Kuske and Detlef Plump and Andy Sch{\"u}rr and Gabriele
		  Taentzer},
  title		= {Graph Transformation for Specification and Programming},
  number	= {7/96},
  year		= {1996},
  institution	= {Univ.\ Bremen},
  type		= {Report},
  added		= {1997-03-18-10-42-26}
}

@InProceedings{	  Andries-Engels:94,
  author	= {Marc Andries and Gregor Engels},
  title		= {Syntax and Semantics of Hybrid Database Languages},
  editor	= {Hans J{\"u}rgen Schneider and Hartmut Ehrig},
  booktitle	= {Graph Transformations in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {776},
  pages		= {19--36},
  year		= {1994},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Andries-Paredaens:92,
  author	= {Marc Andries and Jan Paredaens},
  title		= {A Language for Generic Graph-Transformations},
  editor	= {G. Schmidt and R. Berghammer},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {570},
  pages		= {63--74},
  year		= {1992},
  added		= {1996-03-13-10-09-20}
}

@Book{		  Arbib-Manes:75,
  author	= {Michael A. Arbib and Ernest G. Manes},
  title		= {Arrows, Structures, and Functors},
  year		= {1975},
  publisher	= {Academic Press},
  address	= {New York},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Ariola-Klop-Plump:97,
  author	= {Ariola, Zena M. and Klop, Jan Willem and Plump, Detlef},
  title		= {Confluent Rewriting of Bisimilar Term Graphs},
  booktitle	= {Proc.\ Fourth Workshop on Expressiveness in Concurrency},
  series	= {Electronic Notes in Theoretical Computer Science},
  volume	= {7},
  year		= {1997},
  publisher	= {Elsevier},
  note		= {URL:
		  \texttt{http://www.elsevier.nl/locate/entcs/volume7.html}},
  added		= {1997-09-01-19-34-43}
}

@TechReport{	  Ariola-Klop-Plump:98,
  author	= {Zena M. Ariola and Jan Willem Klop and Detlef Plump},
  title		= {Bisimilarity in Term Graph Rewriting},
  number	= {SEN-R9801},
  year		= {1998},
  institution	= {CWI, Amsterdam},
  type		= {Report},
  added		= {1998-01-26-18-34-25}
}

@InProceedings{	  Arnborg-Andrzej:96,
  author	= {Arnborg, Stefan and Proskurowski Andrzej},
  title		= {A Technique for Recognizing Graphs of Bounded Treewidth
		  with Application to Subclasses of Partial 2-Paths},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {469--486},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@Article{	  Arnborg-Corneil-Proskurowski:87,
  author	= {Stefan Arnborg and D. G. Corneil and Andrzej
		  Proskurowski},
  title		= {Complexity of Finding Embeddings in a $k$-Tree},
  journal	= {SIAM Journal of Alg. and Discrete Methods},
  volume	= {8},
  pages		= {277--284},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Arnborg-Courcelle-Proskurowski.ea:90,
  author	= {S. Arnborg and Bruno Courcelle and A Proskurowski and D.
		  Seese},
  title		= {An algebraic theory of graph reduction},
  number	= {LaBRI TR 90--02},
  year		= {1990},
  institution	= {Univ. Bordeaux},
  added		= {1996-03-28-11-35-01}
}

@InProceedings{	  Arnborg-Courcelle-Proskurowski.ea:91,
  author	= {S. Arnborg and B. Courcelle and A. Proskurowski and D.
		  Seese},
  title		= {An Algebraic Theory of Graph Reduction},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  number	= {532},
  pages		= {70--83},
  year		= {1991},
  publisher	= {Springer-Verlag},
  added		= {1996-04-16-07-34-15}
}

@Article{	  Arnborg-Courcelle-Proskurowski.ea:93,
  author	= {Stefan Arnborg and Bruno Courcelle and Andrzej
		  Proskurowski and Detlef Seese},
  title		= {An Algebraic Theory of Graph Reduction},
  journal	= {Journal of the ACM},
  volume	= {40},
  pages		= {1134--1164},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Arnborg-Lagergren-Seese:88,
  author	= {Stefan Arnborg and Jens Lagergren and Detlef Seese},
  title		= {Problems Easy for Tree-Decompos\-able Graphs},
  editor	= {T. Lepist{\"o} and A. Salomaa},
  booktitle	= {Automata, Languages and Programming},
  series	= {Lecture Notes in Computer Science},
  volume	= {317},
  pages		= {38--51},
  year		= {1988},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Arnborg-Lagergren-Seese:91,
  author	= {Stefan Arnborg and Jens Lagergren and Detlef Seese},
  title		= {Problems Easy for Tree-Decompos\-able Graphs},
  journal	= {Journal of Algorithms},
  volume	= {12},
  pages		= {308--340},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Arnborg-Proskurowski:85,
  author	= {Stefan Arnborg and Andrzej Proskurowski},
  title		= {Characterization and Recognition of Partial $k$-Trees},
  journal	= {Congressus Numerantium},
  volume	= {47},
  pages		= {69--76},
  year		= {1985},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Arnborg-Proskurowski:86,
  author	= {Stefan Arnborg and Andrzej Proskurowski},
  title		= {Characterization and Recognition of Partial 3-Trees},
  journal	= {SIAM Journal of Alg. and Discrete Methods},
  volume	= {7},
  pages		= {305--314},
  year		= {1986},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Arnborg:85,
  author	= {Stefan Arnborg},
  title		= {Efficient Algorithms for Combinatorial Problems on Graphs
		  with Bounded Decomposability --- {A} Survey},
  journal	= {BIT},
  volume	= {25},
  pages		= {2--33},
  year		= {1985},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Assmann:96,
  author	= {A{\ss}mann, Uwe},
  title		= {On Edge Addition Rewrite Systems and their Relevance to
		  Program Analysis},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {321--335},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@Book{		  Ausiello-Atzeni:86,
  title		= {Proc.\ Int.\ Conf.\ on database theory},
  editor	= {G. Ausiello and P. Atzeni},
  series	= {Lecture Notes in Computer Science},
  volume	= {243},
  year		= {1986},
  publisher	= {Springer-Verlag},
  added		= {1996-08-02-14-49-29}
}

@Book{		  Avenhaus:95,
  author	= {J. Avenhaus},
  title		= {{Reduktionssysteme. Rechnen und Schlie\ss{}en in
		  gleichunsdefinierten Strukturen}},
  year		= {1995},
  publisher	= {Springer-Verlag},
  address	= {Berlin},
  added		= {1996-03-13-10-09-20}
}

@Article{	  BCourcelle-Senizergues:96,
  author	= {B.~Courcelle and G. S\'{e}nizergues},
  title		= {The obstructions of a minor-closed set of graphs defined
		  by a hyperedge-replacement graph grammar can be
		  constructed},
  journal	= {Discrete Mathematics},
  year		= {1996},
  note		= {{ In press}},
  added		= {1998-01-22-10-35-50}
}

@Article{	  BCourcelle:96,
  author	= {B.~Courcelle},
  title		= {The monadic second-order logic of graphs {X}: Linear
		  orders},
  journal	= {Theoretical Computer Science},
  volume	= {160},
  pages		= {87--143},
  year		= {1996},
  added		= {1998-01-22-10-35-50}
}

@InProceedings{	  Bailey-Bailey-Fischer:91,
  author	= {Duane A. Bailey and Janice E. Bailey and Charles D.
		  Fischer},
  title		= {Programming with Very Large Graphs},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {84--97},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Baker:83,
  author	= {B. S. Baker},
  title		= {Approximation Algorithms for {NP}-Complete Problems on
		  Planar Graphs},
  booktitle	= {Proc. 24th Ann. Symp. on Foundations of Comp. Sci.},
  pages		= {265--273},
  year		= {1983},
  organization	= {IEEE Comp. Society},
  address	= {Los Angeles},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Banach:96,
  author	= {Banach, Richard},
  title		= {The Contractum in Algebraic Graph Rewriting},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {16--26},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@InProceedings{	  Barendregt-vanEekelen-Glaubert.ea:87,
  author	= {Hendrik Barendregt and Marko {van Eekelen} and John
		  Glaubert and Richard Kennaway and Rinus Plasmeijer and
		  Ronan Sleep},
  title		= {Term Graph Rewriting},
  editor	= {J. W. de Bakker and A. J. Nijman and P. C. Treleaven},
  booktitle	= {PARLE'87},
  series	= {Lecture Notes in Computer Science},
  volume	= {259},
  pages		= {141--158},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@PhDThesis{	  Barthelmann:90,
  author	= {Klaus Barthelmann},
  title		= {Graphgrammatikalische Hilfsmittel zur Beschreibung
		  verteilter Systeme},
  year		= {1990},
  school	= {Erlangen},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Barthelmann:91,
  author	= {Klaus Barthelmann},
  title		= {Describing {G}{\"o}ttler's Operational Graph Grammars with
		  Push\-outs},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {98--112},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Barthelmann:96,
  author	= {Barthelmann, Klaus},
  title		= {Process Specification and Verification},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {225--239},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@InProceedings{	  Bartsch-Spoerl:83,
  author	= {B. {Bartsch-Sp\"orl}},
  title		= {Grammatical Inference of Graph Grammars for Syntactic
		  Pattern Recognition},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {153},
  pages		= {1--7},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Batini-DAtri:79,
  author	= {C. Batini and A. D'Atri},
  title		= {Rewriting Systems as a Tool for Relational Data Base
		  Design},
  editor	= {V. Claus and H. Ehrig and G. Rozenberg},
  booktitle	= {Graph-Grammars and Their Application to Computer Science
		  and Biology},
  series	= {Lecture Notes in Computer Science},
  volume	= {73},
  pages		= {139--154},
  year		= {1979},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Batini-DAtri:81,
  author	= {C. Batini and A. D'Atri},
  title		= {Schema Hypergraphs: {A} Formalism to Investigate Logical
		  Data Base Design},
  editor	= {H. Noltemeier},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {100},
  pages		= {177--194},
  year		= {1981},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Bauderon-Courcelle:86,
  author	= {Michel Bauderon and Bruno Courcelle},
  title		= {An Algebraic Formalism for Graphs},
  editor	= {P. {Franchi-Zannettacci}},
  booktitle	= {CAAP '86},
  series	= {Lecture Notes in Computer Science},
  volume	= {214},
  pages		= {74--84},
  year		= {1986},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Bauderon-Courcelle:87,
  author	= {Michel Bauderon and Bruno Courcelle},
  title		= {Graph Expressions and Graph Rewriting},
  journal	= {Mathematical Systems Theory},
  volume	= {20},
  pages		= {83--127},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Bauderon-Jacquet:96,
  author	= {M. Bauderon and H. Jacquet},
  title		= {Categorical product as a generic graph rewriting
		  mechanism},
  number	= {1166--97},
  year		= {1996},
  institution	= {LaBRI, University of Bordeaux},
  note		= {Submitted to J.A.C.T.S},
  added		= {1998-01-22-10-35-50}
}

@InProceedings{	  Bauderon:89,
  author	= {Michel Bauderon},
  title		= {On Systems of Equations Defining Infinite Graphs},
  editor	= {J. van Leeuwen},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {344},
  pages		= {54--73},
  year		= {1989},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Bauderon:91,
  author	= {Michel Bauderon},
  title		= {Infinite Hypergraphs {I}. {B}asic Properties},
  journal	= {Theoretical Computer Science},
  volume	= {82},
  pages		= {177--214},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Bauderon:92,
  author	= {Michel Bauderon},
  title		= {Infinite Hypergraphs {II}. {S}ystems of Recursive
		  Equations},
  journal	= {Theoretical Computer Science},
  volume	= {103},
  pages		= {165--190},
  year		= {1992},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Bauderon:95,
  author	= {Michel Bauderon},
  title		= {A Uniform Approach to Graph Rewriting: The Pullback
		  Approach},
  editor	= {Manfred Nagl},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {1017},
  pages		= {101--115},
  year		= {1995},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Bauderon:96,
  author	= {Bauderon, Michel},
  title		= {A Category-Theoretical Approach to Vertex Replacement:
		  {The} Generation of Infinite Graphs},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {27--37},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@PhDThesis{	  Beeck:95,
  author	= {Beeck, M. von der},
  title		= {{Ein Kontrollmodell f{\"u}r die Strukturierte Analyse}},
  year		= {1995},
  address	= {RWTH Aachen},
  type		= {Dissertation},
  school	= {Lehrstuhl f{\"u}r Informatik III},
  added		= {1996-11-28-18-33-07}
}

@Book{		  Berge:73,
  author	= {Claude Berge},
  title		= {Graphs and Hypergraphs},
  year		= {1973},
  publisher	= {North Holland},
  address	= {Amsterdam},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Berman-Shannon:84,
  author	= {F. Berman and G. Shannon},
  title		= {Edge Grammars: Decidability Results and Formal Language
		  Issues},
  booktitle	= {Proc. of the 22nd Allerton Conference on Communication,
		  Control and Computing},
  pages		= {921--930},
  year		= {1984},
  address	= {Urbana, Illinois},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Bern-Lawler-Wong:85,
  author	= {M. W. Bern and E. L. Lawler and A. L. Wong},
  title		= {Why Certain Subgraph Computations Require only Linear
		  Time},
  booktitle	= {Proc. 26th Symp. on Foundations of Computer Science (FOCS
		  '85)},
  pages		= {117--125},
  year		= {1985},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Bern-Lawler-Wong:87,
  author	= {M. W. Bern and E. L. Lawler and A. L. Wong},
  title		= {Linear Time Computation of Optimal Subgraphs of
		  Decomposable Graphs},
  journal	= {Journal of Algorithms},
  volume	= {8},
  pages		= {216--235},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@Manual{	  Beyer:92,
  author	= {Martin Beyer},
  title		= {{AGG 1.0 -- Kurzanleitung}},
  year		= {1992},
  school	= {Berlin},
  added		= {1996-03-13-10-09-20}
}

@Manual{	  Beyer:92b,
  author	= {Martin Beyer},
  title		= {{AGG 1.0 -- Tutorial}},
  year		= {1992},
  school	= {Berlin},
  added		= {1996-03-13-10-09-20}
}

@Manual{	  Beyer:93,
  author	= {Martin Beyer},
  title		= {{AGG}, An Algebraic Graph Grammar System, User's Manual},
  year		= {1993},
  school	= {Technical University of Berlin},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Billaud-Lafon-Yves.ea:90,
  author	= {Michel Billaud and Pierre Lafon and Yves and M\'etivier
		  and Eric Sopena},
  title		= {Graph Rewriting Systems with Priorities},
  editor	= {M. Nagl},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {411},
  pages		= {94--106},
  year		= {1990},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Bloedel-Wankmueller:87,
  author	= {V. Bl{\"o}del and F. Wankm{\"u}ller},
  title		= {Graph Languages Defined by Systems of Forbidden
		  Structures: {A} Survey},
  editor	= {H. G\"ottler and H. J. Schneider},
  booktitle	= {Graph-Theoric Concepts in Computer Science, International
		  Workshop WG'87},
  series	= {Lecture Notes in Computer Science},
  number	= {314},
  pages		= {46--58},
  year		= {1987},
  publisher	= {Springer-Verlag},
  added		= {1996-04-16-07-34-15}
}

@TechReport{	  Blostein-Fahmy-Grbavec:95,
  author	= {D. Blostein and H. Fahmy and A. Grbavec},
  title		= {Practical use of graph rewriting},
  number	= {95-373},
  year		= {1995},
  institution	= {Queen's University},
  address	= {CDN},
  added		= {1996-08-02-14-49-29}
}

@InProceedings{	  Blostein-Fahmy-Grbavec:96,
  author	= {Blostein, Dorothea and Fahmy, Hoda and Grbavec, Ann},
  title		= {Issues in the Practical Use of Graph Rewriting},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {38--55},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@TechReport{	  Bodlaender:86,
  author	= {Hans L. Bodlaender},
  title		= {Classes of Graphs with Bounded Tree-Width},
  number	= {RUU-CS-86-22},
  year		= {1986},
  institution	= {Utrecht},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Bodlaender:88,
  author	= {Hans L. Bodlaender},
  title		= {Dynamic Programming on Graphs with Bounded Tree-width},
  editor	= {T. Lepist{\"o} and A. Salomaa},
  booktitle	= {Automata, Languages and Programming},
  series	= {Lecture Notes in Computer Science},
  volume	= {317},
  pages		= {105--118},
  year		= {1988},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Bodlaender:88b,
  author	= {H. L. Bodlaender},
  title		= {{NC}--algorithms for graphs with small tree-width},
  number	= {RUU--CS--88--4},
  year		= {1988},
  institution	= {Rijskuniversiteit Utrecht, vakgroep informatica},
  type		= {Report},
  added		= {1996-03-28-11-35-01}
}

@InCollection{	  Bodlaender:88c,
  author	= {H. L. Bodlaender},
  title		= {Polynomial algorithms for graph isomorphism and chromatic
		  index on partial $k$-trees},
  editor	= {R. Karlsson and A. Lingas and G. Rozenberg},
  booktitle	= {Proc. {SWAT} 88},
  series	= {Lecture Notes in Computer Science},
  volume	= {318},
  pages		= {223--232},
  year		= {1988},
  publisher	= {Springer},
  added		= {1996-03-28-11-35-01}
}

@InProceedings{	  Bodlaender:89,
  author	= {Hans L. Bodlaender},
  title		= {{NC}-Algorithms for Graphs with Small Tree-Width},
  editor	= {J. van Leeuwen},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {344},
  pages		= {1--10},
  year		= {1989},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Boehm-Ehrig-Hummert.ea:87,
  author	= {Paul Boehm and Hartmut Ehrig and Udo Hummert and Michael
		  L{\"o}we},
  title		= {Towards Distributed Graph Grammars},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {86--98},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Boehm-Fonio-Habel:85,
  author	= {Paul Boehm and Harald-Reto Fonio and Annegret Habel},
  title		= {Amalgamation of Graph Transformations with Applications to
		  Synchronization},
  editor	= {H. Ehrig and C. Floyd and M. Nivat and J. Thatcher},
  booktitle	= {Mathematical Foundations of Software Development},
  series	= {Lecture Notes in Computer Science},
  volume	= {185},
  pages		= {267--283},
  year		= {1985},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Boehm-Fonio-Habel:87,
  author	= {Paul Boehm and Harald-Reto Fonio and Annegret Habel},
  title		= {Amalgamation of Graph Transformations: {A} Synchronization
		  Mechanism},
  journal	= {Journal of Computer and System Sciences},
  volume	= {34},
  pages		= {377--408},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Boehm-Jacopini:66,
  author	= {C. B{\"o}hm and G. Jacopini},
  title		= {Flow Diagrams, Turing Machines, and Languages with only
		  Two Formation Rules},
  journal	= {Comm. ACM},
  volume	= {19},
  pages		= {366--371},
  year		= {1966},
  added		= {1996-03-13-10-09-20}
}

@Booklet{	  Bossut-Warin:86,
  author	= {F. Bossut and F. Warin},
  title		= {Rationalit\'e et reconnaissabilit\'e dans les graphes
		  acycliques},
  year		= {1986},
  address	= {Univ. of Lille},
  howpublished	= {Ph.D.},
  added		= {1996-03-28-11-35-01}
}

@TechReport{	  Bottreau-Metivier:97,
  author	= {A. Bottreau and Y. M\'etivier},
  title		= {Normal forms of graph rewriting, minor searching : two
		  applications of enumeration},
  year		= {1997},
  institution	= {LaBRI},
  note		= {submitted},
  added		= {1998-01-22-10-35-50}
}

@InProceedings{	  Brandenburg-Chytil:91,
  author	= {Franz J. Brandenburg and Michal P. Chytil},
  title		= {Cycle Chain Code Picture Languages},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {157--173},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Brandenburg-Skodinis:94,
  author	= {Franz J. Brandenburg and Konstantin Skodinis},
  title		= {Confluent {eNCE Graph} Grammars and Neighborhood
		  Preserving Normal Form},
  year		= {1994},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Brandenburg-Skodinis:95,
  author	= {Franz J. Brandenburg and Kostantin Skodinis},
  title		= {Graph Automata for Linear Graph Languages},
  year		= {1995},
  note		= {Submitted for publication},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Brandenburg-Skodinis:96,
  author	= {Brandenburg, Franz Joseph and Skodinis, Kostantin},
  title		= {Graph Automata for Linear Languages},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {336--350},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@InCollection{	  Brandenburg:83,
  author	= {Franz J. Brandenburg},
  title		= {On the Complexity of the Membership Problem of Graph
		  Grammars},
  editor	= {M. Nagl and J. Perl},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  pages		= {40--49},
  year		= {1983},
  publisher	= {Trauner Verlag},
  address	= {Linz},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Brandenburg:87,
  author	= {Franz J. Brandenburg},
  title		= {On Partially Ordered Graph-Grammars},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {99--111},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Brandenburg:88,
  author	= {Franz J. Brandenburg},
  title		= {On Polynomial Time Graph Grammars},
  editor	= {R. Cori and M. Wirsing},
  booktitle	= {STACS 88},
  series	= {Lecture Notes in Computer Science},
  volume	= {294},
  pages		= {227--236},
  year		= {1988},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Brandenburg:91,
  author	= {Franz J. Brandenburg},
  title		= {Layout Graph Grammars: The Placement Approach},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {144--156},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Brandenburg:91b,
  author	= {Franz J. Brandenburg},
  title		= {The Equivalence of Boundary and Confluent Graph Grammars
		  on Graph Languages of Bounded Degree},
  editor	= {R. V. Book},
  booktitle	= {Rewriting Techniques and Applications},
  series	= {Lecture Notes in Computer Science},
  volume	= {488},
  pages		= {312--322},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@Book{		  Breu:91,
  author	= {R. Breu},
  title		= {Algebraic Specification Techniques in Object-Oriented
		  Programming Environments},
  series	= {Lecture Notes in Computer Science},
  volume	= {562},
  year		= {1991},
  publisher	= {Springer-Verlag},
  added		= {1996-08-02-14-49-29}
}

@Article{	  Buechi:60,
  author	= {J. B{\"u}chi},
  title		= {Weak Second Order Logic and Finite Automata},
  journal	= {Z. Math. Logik, Grundlag. Math.},
  volume	= {5},
  pages		= {66--62},
  year		= {1960},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Bunke-Glauser-Tran:91,
  author	= {Horst Bunke and T. Glauser and T.-H. Tran},
  title		= {An Efficient Implementation of Graph Grammars Based on the
		  {RETE}-Matching Algorithm},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {174--189},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Bunke-Haller:90,
  author	= {Horst Bunke and B. Haller},
  title		= {A Parser for Context Free Plex Grammars},
  editor	= {M. Nagl},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {411},
  pages		= {136--150},
  year		= {1990},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Bunke:79,
  author	= {Horst Bunke},
  title		= {Programmed Graph Grammars},
  editor	= {V. Claus and H. Ehrig and G. Rozenberg},
  booktitle	= {Graph-Grammars and Their Application to Computer Science
		  and Biology},
  series	= {Lecture Notes in Computer Science},
  volume	= {73},
  pages		= {155--166},
  year		= {1979},
  added		= {1996-03-13-10-09-20}
}

@PhDThesis{	  Bunke:79b,
  author	= {Bunke, H.},
  title		= {{Sequentielle und parallele Graph-Grammatiken}},
  year		= {1979},
  address	= {F.A.U. Erlangen},
  type		= {Dissertation},
  school	= {Inst. f. math. Maschinen und Datenverarb. (IMMD)},
  added		= {1996-11-28-18-33-07}
}

@Article{	  Bunke:82,
  author	= {Horst Bunke},
  title		= {On the Generative Power of Sequential and Parallel
		  Programmed Graph Grammars},
  journal	= {Computing},
  volume	= {29},
  pages		= {89--112},
  year		= {1982},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Bunke:82b,
  author	= {H. Bunke},
  title		= {Attributed programmed graph grammars and their application
		  to schematic diagram interpretation},
  series	= {IEEE pattern analysis and machine intelligence},
  volume	= {4},
  number	= {6},
  pages		= {574--582},
  year		= {1982},
  publisher	= {IEEE Computer Society Press},
  added		= {1996-08-02-14-49-29}
}

@InProceedings{	  Bunke:83,
  author	= {Horst Bunke},
  title		= {Graph Grammars as a Generative Tool in Image
		  Understanding},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {153},
  pages		= {8--19},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Castellani-Montanari:83,
  author	= {I. Castellani and Ugo Montanari},
  title		= {Graph Grammars for Distributed Systems},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {153},
  pages		= {20--38},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Caucal:91,
  author	= {D. Caucal},
  title		= {An Application of Graph Grammars to the Elimination of
		  Redundancy from Fonctions Defined by Schemes},
  editor	= {H. Erhig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  number	= {532},
  pages		= {190--206},
  year		= {1991},
  publisher	= {Springer-Verlag},
  added		= {1996-04-16-07-34-15}
}

@Article{	  Caucal:92,
  author	= {Didier Caucal},
  title		= {On the Regular Structure of Prefix Rewriting},
  journal	= {Theoretical Computer Science},
  volume	= {106},
  pages		= {61--86},
  year		= {1992},
  added		= {1996-03-13-10-09-20}
}

@Book{		  Chartrand-Oellermann:93,
  author	= {Gary Chartrand and Ortrud R. Oellermann},
  title		= {Applied and Algorithmic Graph Theory},
  year		= {1993},
  publisher	= {McGraw-Hill},
  address	= {New York},
  added		= {1996-03-13-10-09-20}
}

@Proceedings{	  Claus-Ehrig-Rozenberg:79,
  title		= {Graph Grammars and Their Application to Computer Science
		  and Biology},
  editor	= {Volker Claus and Hartmut Ehrig and Grzegorz Rozenberg},
  series	= {Lecture Notes in Computer Science},
  volume	= {73},
  year		= {1979},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Collectif:91,
  author	= {Collectif},
  title		= {Panel Discussion: The Use of Graph Grammars in
		  Application},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  number	= {532},
  pages		= {41--60},
  year		= {1991},
  publisher	= {Springer-Verlag},
  added		= {1996-04-16-07-34-15}
}

@TechReport{	  Conrad-Gajewski-Holl-Biniasz.ea:95,
  author	= {Mirko Conrad and Magdalena Gajewski and Rainer
		  Holl-Biniasz and Michael Rudolf and Jochen Demuth and
		  Stephan Weber and Reiko Heckel and J{\"u}rgen M{\"u}ller
		  and Gabriele Taentzer and Annika Wagner},
  title		= {{Graphische Spezifikation ausgew\"ahlter Teile von AGG --
		  einem algebraischen Graphgrammatiksystem}},
  year		= {1995},
  institution	= {Technical University of Berlin},
  type		= {Technical Report 95-7},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Cook:74,
  author	= {C. R. Cook},
  title		= {First Order Graph Grammars},
  journal	= {SIAM Journal on Computing},
  volume	= {3},
  pages		= {90--99},
  year		= {1974},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Corradini-Drewes:97,
  author	= {Corradini, A. and Drewes, F.},
  title		= {({C}yclic) Term Graph Rewriting is adequate for Rational
		  Parallel Term Rewriting},
  number	= {TR-97-14},
  year		= {1997},
  institution	= {Dipartimento di Informatica, Pisa},
  added		= {1997-09-02-14-33-22}
}

@InCollection{	  Corradini-Ehrig-Heckel.ea:97,
  author	= {Corradini, Andrea and Ehrig, Hartmut and Heckel, Reiko and
		  Korff, Martin and L\"owe, Michael and Ribeiro, Leila and
		  Wagner, Anika},
  title		= {Algebraic Approaches to Graph Transformation - Part {I}:
		  {S}ingle Pushout Approach and Comparison with Double
		  Pushout Approach},
  editor	= {Rozenberg, G.},
  booktitle	= {Handbook of Graph Grammars and Computing by Graph
		  Transformation. Vol.\ {I}: Foundations},
  chapter	= {4},
  pages		= {247--312},
  year		= {1997},
  publisher	= {World Scientific},
  added		= {1997-03-17-16-11-19}
}

@Article{	  Corradini-Ehrig-Loewe.ea:95,
  author	= {Andrea Corradini and Hartmut Ehrig and Michael L{\"o}we
		  and Ugo and Montanari and Julia Padberg},
  title		= {Typed Graph Grammars and Their Adjunction with Categories
		  of Derivations},
  year		= {1995},
  note		= {Submitted for publication},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Corradini-Ehrig-Loewe.ea:95b,
  author	= {Andrea Corradini and Hartmut Ehrig and Michael L{\"o}we
		  and Ugo and Montanari and Francesca Rossi},
  title		= {Algebraic Approach to Graph Transformations {II}: Models
		  of Computation in the Double Pushout Approach},
  year		= {1995},
  note		= {Submitted for publication},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Corradini-Ehrig-Loewe.ea:96,
  author	= {Corradini, Andrea and Ehrig, Hartmut and L{\"o}we, Martin
		  and Montanari, Ugo and Rossi, Francesca},
  title		= {An Event Structure Semantics for Graph Grammars with
		  Prallel Productions},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {240--256},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@InProceedings{	  Corradini-Ehrig-Montanari.ea:96,
  author	= {Corradini, Andrea and Ehrig, Hartmut and Montanari, Ugo
		  and Padberg, Julia},
  title		= {The Category of Typed Graph Grammars and its Adjunction
		  with Categories of Derivations},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {56--74},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@InProceedings{	  Corradini-Gadducci:97,
  author	= {Corradini, A. and Gadducci, F.},
  title		= {A 2-Categorical Presentation of Term Graph Rewriting},
  booktitle	= {Proceedings CTCS'97},
  series	= {LNCS},
  volume	= {1290},
  year		= {1997},
  publisher	= {Springer Verlag},
  added		= {1998-01-22-10-35-50}
}

@Unpublished{	  Corradini-Gadducci:97b,
  author	= {Corradini, A. and Gadducci, F.},
  title		= {An Algebraic Presentation of Term Graphs, via PS-Monoidal
		  Categories},
  year		= {1997},
  note		= {Submitted for publication. Available at {\tt
		  http://www.di.unipi.it/$\sim$gadducci/papers/aptg.ps}},
  added		= {1998-01-22-10-35-50}
}

@InCollection{	  Corradini-Heckel:95,
  author	= {Andrea Corradini and Reiko Heckel},
  title		= {A Compositional Approach to Structuring and Refinement of
		  Typed Graph Grammars},
  editor	= {A. Corradini and U. Montanari},
  booktitle	= {SEGRAGRA'95, Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph
		  Rewriting and Computation},
  journal	= {Electronic Notes in Theoretical Computer Science},
  volume	= {2},
  year		= {1995},
  publisher	= {Elsevier},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Corradini-Montanari-Rossi.ea:91,
  author	= {Andrea Corradini and Ugo Montanari and Francesca Rossi and
		  Hartmut Ehrig and Michael L{\"o}we},
  title		= {Graph Grammars and Logic Programming},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {221--237},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Corradini-Montanari-Rossi.ea:97,
  author	= {Corradini, Andrea and Montanari, Ugo and Rossi, Francesca
		  and Ehrig, Hartmut and Heckel, Reiko and L\"owe, Michael},
  title		= {Algebraic Approaches to Graph Transformation - Part {I}:
		  {B}asic Concepts and Double Pushout Approach},
  editor	= {Rozenberg, G.},
  booktitle	= {Handbook of Graph Grammars and Computing by Graph
		  Transformation. Vol.\ {I}: Foundations},
  chapter	= {3},
  pages		= {163--246},
  year		= {1997},
  publisher	= {World Scientific},
  added		= {1997-03-17-16-11-19}
}

@InCollection{	  Corradini-Montanari-Rossi.ea:97b,
  author	= {Corradini, A. and Montanari, U. and Rossi, F. and Ehrig,
		  H. and Heckel, R. and L{\"o}we, M.},
  title		= {Algebraic Approaches to Graph Transformation {I}: Basic
		  Concepts and Double Pushout Approach},
  editor	= {Rozenberg, G.},
  booktitle	= {Handbook of Graph Grammars and Computing by Graph
		  transformation, Volume 1: Foundations},
  year		= {1997},
  publisher	= {World Scientific},
  added		= {1998-01-22-10-35-50}
}

@InProceedings{	  Corradini-Rossi-Parisi-Presicce:91,
  author	= {Andrea Corradini and Francesca Rossi and Francesco
		  {Parisi-Presicce}},
  title		= {Logic Programming as Hypergraph Rewriting},
  booktitle	= {CAAP '91},
  series	= {Lecture Notes in Computer Science},
  volume	= {493},
  pages		= {275--295},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Corradini-Rossi:93,
  author	= {Andrea Corradini and Francesca Rossi},
  title		= {A New Term Graph Rewriting Formalism: Hyperedge
		  Replacement Jungle Rewriting},
  editor	= {Ronan Sleep and Rinus Plasmeijer and Marko {van Eekelen}},
  booktitle	= {Term Graph Rewriting: Theory and Practice},
  pages		= {101--115},
  year		= {1993},
  publisher	= {John Wiley},
  address	= {New York},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Corradini-Rossi:93b,
  author	= {Andrea Corradini and Francesca Rossi},
  title		= {Hyperedge Replacement Jungle Rewriting for Term-Rewriting
		  Systems and Logic Programming},
  journal	= {Theoretical Computer Science},
  volume	= {109},
  pages		= {7--48},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Corradini-Rossi:96,
  author	= {Corradini, Andrea and Rossi, Francesca},
  title		= {Synchronized Composition of Graph Grammar Productions},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {257--270},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@InProceedings{	  Corradini-Wolz:94,
  author	= {Andrea Corradini and Dietmar Wolz},
  title		= {Jungle Rewriting: an Abstract Description of a Lazy
		  Narrowing Machine},
  editor	= {Hans J{\"u}rgen Schneider and Hartmut Ehrig},
  booktitle	= {Graph Transformations in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {776},
  pages		= {119--137},
  year		= {1994},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Courcelle-Engelfriet-Rozenberg:91,
  author	= {Bruno Courcelle and Joost Engelfriet and Grzegorz
		  Rozenberg},
  title		= {Context-Free Handle-Re\-writ\-ing Hypergraph Grammars},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {253--268},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Courcelle-Engelfriet-Rozenberg:93,
  author	= {Bruno Courcelle and Joost Engelfriet and Grzegorz
		  Rozenberg},
  title		= {Handle-Rewriting Hypergraph Grammars},
  journal	= {Journal of Computer and System Sciences},
  volume	= {46},
  pages		= {218--270},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Courcelle-Engelfriet:95,
  author	= {Bruno Courcelle and Joost Engelfriet},
  title		= {A Logical Characterization of the Sets of Hypergraphs
		  Defined by Hyperedge Replacement Grammars},
  journal	= {Mathematical Systems Theory},
  volume	= {28},
  pages		= {515--552},
  year		= {1995},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Courcelle-Franchi-Zannettacci:82,
  author	= {Bruno Courcelle and P. {Franchi-Zannettacci}},
  title		= {Attribute Grammars and Recursive Program Schemes {I} and
		  {II}},
  journal	= {Theoretical Computer Science},
  volume	= {17},
  pages		= {163--191, 235--257},
  year		= {1982},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Courcelle-Mosbah:90,
  author	= {Bruno Courcelle and Mohamed Mosbah},
  title		= {Monadic Second Order Evaluations on Tree-Decomposable
		  Graphs},
  number	= {LaBRI TR 90--110},
  year		= {1990},
  institution	= {Univ. Bordeaux},
  added		= {1996-03-28-11-35-01}
}

@Article{	  Courcelle-Mosbah:93,
  author	= {Bruno Courcelle and Mohamed Mosbah},
  title		= {Monadic Second-Order Evaluations on Tree-Decomposable
		  Graphs},
  journal	= {Theoretical Computer Science},
  volume	= {109},
  pages		= {49--82},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Courcelle-Senizergues:96,
  author	= {Courcelle, Bruno and S{\'e}nizergues, G.},
  title		= {The Obstructions of a Minor-Closed Set of Graphs Defined
		  by Hyperedge Replacement can be Constructed},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {351--367},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@Article{	  Courcelle:83,
  author	= {Bruno Courcelle},
  title		= {Fundamental Properties of Infinite Trees},
  journal	= {Theoretical Computer Science},
  volume	= {25},
  pages		= {95--169},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Courcelle:86,
  author	= {Bruno Courcelle},
  title		= {Equivalence and Transformations of Regular Systems.
		  Applications to Recursive Program Schemes and Grammars},
  journal	= {Theoretical Computer Science},
  volume	= {42},
  pages		= {1--22},
  year		= {1986},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Courcelle:87,
  author	= {Bruno Courcelle},
  title		= {A Representation of Graphs by Algebraic Expressions and
		  its Use for Graph Rewriting Systems},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {112--132},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Courcelle:87b,
  author	= {Bruno Courcelle},
  title		= {An Axiomatic Definition of Context-Free Rewriting and its
		  Application to {NLC} Graph Grammars},
  journal	= {Theoretical Computer Science},
  volume	= {55},
  pages		= {141--181},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Courcelle:87c,
  author	= {Bruno Courcelle},
  title		= {On Context-Free Sets of Graphs and Their Monadic
		  Second-Order Theory},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {133--146},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Courcelle:88,
  author	= {Bruno Courcelle},
  title		= {An Axiomatic Definition of Context-Free Rewriting and its
		  Application to {NLC} Grammars},
  editor	= {R. Cori and M. Wirsing},
  booktitle	= {STACS 88},
  series	= {Lecture Notes in Computer Science},
  volume	= {294},
  pages		= {237--247},
  year		= {1988},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Courcelle:88b,
  author	= {Bruno Courcelle},
  title		= {Some Applications of Logic, of Universal Algebra,and of
		  Category Theory to the Theory of Graph Transformations},
  journal	= {Bull. EATCS},
  volume	= {36},
  pages		= {161--218},
  year		= {1988},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Courcelle:88c,
  author	= {Bruno Courcelle},
  title		= {The monadic second--order logic of graphs, {III}:
		  tree--width, forbidden minors and complexity issues},
  year		= {1988},
  institution	= {Universit\'e Bordeaux 1},
  type		= {Preprint},
  added		= {1996-03-28-11-35-01}
}

@InProceedings{	  Courcelle:89,
  author	= {Bruno Courcelle},
  title		= {The Monadic Second-Order Logic of Graphs: Definable Sets
		  of Finite Graphs},
  editor	= {J. van Leeuwen},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {344},
  pages		= {30--53},
  year		= {1989},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Courcelle:89b,
  author	= {Bruno Courcelle},
  title		= {The Monadic Second-Order Logic of Graphs {II}: Infinite
		  Graphs of Bounded Width},
  journal	= {Mathematical Systems Theory},
  volume	= {21},
  pages		= {187--221},
  year		= {1989},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Courcelle:90,
  author	= {Bruno Courcelle},
  title		= {Graph Rewriting: An Algebraic and Logic Approach},
  editor	= {J. van Leeuwen},
  booktitle	= {Handbook of Theoretical Computer Science},
  volume	= {{B}},
  pages		= {193--242},
  year		= {1990},
  publisher	= {Elsevier},
  address	= {Amsterdam},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Courcelle:90b,
  author	= {Bruno Courcelle},
  title		= {The Monadic Second-Order Logic of Graphs {I}: Recognizable
		  Sets of Finite Graphs},
  journal	= {Information and Computation},
  volume	= {85},
  pages		= {12--75},
  year		= {1990},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Courcelle:90c,
  author	= {Bruno Courcelle},
  title		= {The Monadic Second-Order Logic of Graphs {IV}:
		  Definability Properties of Equational Graphs},
  journal	= {Annals of Pure and Applied Logic},
  volume	= {49},
  pages		= {193--255},
  year		= {1990},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Courcelle:91,
  author	= {Bruno Courcelle},
  title		= {Graphs as Relational Structures: An Algebraic and Logical
		  Approach},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {238--252},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Courcelle:91b,
  author	= {Bruno Courcelle},
  title		= {Recursive Queries and Context-Free Graph Grammars},
  journal	= {Theoretical Computer Science},
  volume	= {78},
  pages		= {217--244},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Courcelle:91c,
  author	= {Bruno Courcelle},
  title		= {The Monadic Second-Order Logic of Graphs {V}: On Closing
		  the Gap between Definability and Recognizability},
  journal	= {Theoretical Computer Science},
  volume	= {80},
  pages		= {153--202},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Courcelle:91d,
  author	= {B. Courcelle},
  title		= {The Logical Expression of Graph Properties (Abstract)},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  number	= {532},
  pages		= {38--40},
  year		= {1991},
  publisher	= {Springer-Verlag},
  added		= {1996-04-16-07-34-15}
}

@InProceedings{	  Courcelle:92,
  author	= {Bruno Courcelle},
  title		= {Monadic Second Order Definable Graph Transductions},
  editor	= {J.-C. Raoult},
  booktitle	= {CAAP'92},
  series	= {Lecture Notes in Computer Science},
  volume	= {581},
  pages		= {124--144},
  year		= {1992},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Courcelle:92b,
  author	= {Bruno Courcelle},
  title		= {The Monadic Second-Order Logic of Graphs {III}:
		  Tree-Decompositions, Minors and Complexity Issues},
  journal	= {{RAIRO} Theoretical Informatics and Applications},
  volume	= {26},
  pages		= {257--286},
  year		= {1992},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Courcelle:92c,
  author	= {Bruno Courcelle},
  title		= {The Monadic Second-Order Logic of Graphs {VII}: Graphs as
		  Relational Structures},
  journal	= {Theoretical Computer Science},
  volume	= {101},
  pages		= {3--33},
  year		= {1992},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Courcelle:93,
  author	= {Bruno Courcelle},
  title		= {Context-Free Graph Grammars: Separating Vertex Replacement
		  from Hyperedge Replacement},
  editor	= {Z. \'Esik},
  booktitle	= {Fundamentals of Computation Theory},
  series	= {Lecture Notes in Computer Science},
  volume	= {710},
  pages		= {181--193},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Courcelle:93b,
  author	= {Bruno Courcelle},
  title		= {Graph Grammars, Monadic Second-Order Logic And The Theory
		  of Graph Minors},
  editor	= {N. Robertson and P. Seymour},
  booktitle	= {Graph Structure Theory},
  series	= {Contemporary Mathematics},
  volume	= {147},
  pages		= {565--590},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Courcelle:93c,
  author	= {Courcelle, Bruno},
  title		= {Graph Grammars, Monadic Second-Order Logic and the Theory
		  of Graph Minors},
  journal	= {Contemporary Mathematics},
  volume	= {147},
  pages		= {565--589},
  year		= {1993},
  added		= {1997-04-01-17-37-10}
}

@Article{	  Courcelle:94,
  author	= {Bruno Courcelle},
  title		= {Monadic Second-Order Definable Graph Transductions: {A}
		  Survey},
  journal	= {Theoretical Computer Science},
  volume	= {126},
  pages		= {53--75},
  year		= {1994},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Courcelle:94b,
  author	= {Bruno Courcelle},
  title		= {Recognizable Sets of Graphs: Equivalent Definitions and
		  Closure Properties},
  journal	= {Mathematical Structures in Computer Science},
  volume	= {4},
  pages		= {1--32},
  year		= {1994},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Courcelle:95,
  author	= {Bruno Courcelle},
  title		= {Structural Properties of Context-Free Sets of Graphs
		  Generated by Vertex Replacement},
  journal	= {Information and Computation},
  volume	= {116},
  pages		= {275--293},
  year		= {1995},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Courcelle:95b,
  author	= {Bruno Courcelle},
  title		= {The Monadic Second-Order Logic of Graphs {VI}: On Several
		  Representations of Graphs by Relational Structures},
  journal	= {Discrete Applied Mathematics},
  year		= {1995},
  note		= {To appear},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Courcelle:95c,
  author	= {Bruno Courcelle},
  title		= {The Monadic Second-Order Logic of Graphs {IX}: Machines
		  and Their Behaviours},
  journal	= {Theoretical Computer Science},
  volume	= {151},
  pages		= {125--162},
  year		= {1995},
  added		= {1996-03-28-11-35-01}
}

@InCollection{	  Courcelle:96,
  ATTENTION	= {newer record added: Mar 17, 1997},
  author	= {Bruno Courcelle},
  title		= {The Expression of Graph Properties and Graph
		  Transformations in Monadic Second-Order Logic},
  editor	= {G. Rozenberg},
  booktitle	= {Handbook of Graph Rewriting. Vol.\ {I}: Foundations},
  year		= {1996},
  publisher	= {World Scientific},
  note		= {To appear},
  added		= {1996-03-28-11-35-01}
}

@InProceedings{	  Courcelle:96b,
  author	= {Courcelle, Bruno},
  title		= {The Definition in Monadic Second-Order Logig of Modular
		  Decompositions of Ordered Graphs},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {487--501},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@Article{	  Courcelle:96c,
  author	= {B. Courcelle},
  title		= {Basic notions of Universal Algebra for Language Theory and
		  Graph Grammars},
  journal	= {Theoretical Computer Science},
  volume	= {163},
  pages		= {1--54},
  year		= {1996},
  added		= {1998-01-22-10-35-50}
}

@InCollection{	  Courcelle:97,
  author	= {Courcelle, Bruno},
  title		= {The Expression of Graph Properties and Graph
		  Transformations in Monadic Second-Order Logic},
  editor	= {Rozenberg, G.},
  booktitle	= {Handbook of Graph Grammars and Computing by Graph
		  Transformation. Vol.\ {I}: Foundations},
  chapter	= {5},
  pages		= {313--400},
  year		= {1997},
  publisher	= {World Scientific},
  added		= {1997-03-17-16-11-19}
}

@InProceedings{	  Courcelle:97b,
  author	= {B. Courcelle},
  title		= {On the expression of graph properties in some fragments of
		  monadic second-order logic},
  editor	= {N. Immerman and P.Kolaitis},
  booktitle	= {Descriptive complexity and finite models},
  volume	= {31},
  pages		= {33--62},
  year		= {1997},
  month		= {June},
  publisher	= {DIMACS Series in Discrete Mathematics and Theoretical
		  Computer Sciences},
  added		= {1998-01-22-10-35-50}
}

@Article{	  CulikII-Lindenmayer:76,
  author	= {K. {Culik {II}} and A. Lindenmayer},
  title		= {Parallel Rewriting on Graphs and Multidimensional
		  Development},
  journal	= {Int. Journ. of General Systems},
  volume	= {3},
  pages		= {53--66},
  year		= {1976},
  added		= {1996-03-13-10-09-20}
}

@Article{	  CulikII-Wood:79,
  author	= {K. {Culik {II}} and D. Wood},
  title		= {A Mathematical Investigation of Propagating Graph {OL}
		  Systems},
  journal	= {Information and Control},
  volume	= {43},
  pages		= {50--82},
  year		= {1979},
  added		= {1996-03-13-10-09-20}
}

@Proceedings{	  Cuny-Ehrig-Engels.ea:96,
  title		= {Graph Grammars and Their Application to Computer Science},
  editor	= {Cuny, Janice and Ehrig, Hartmut and Engels, Gregor and
		  Rozenberg, Grzegorz},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-17-14-32}
}

@InProceedings{	  DJanin-IWalukiewicz:96,
  author	= {D.~Janin and I.~Walukiewicz},
  title		= {On the expressive completeness of the modal mu-calculus
		  w.r.t. monadic second order logic},
  booktitle	= {Proc.\ CONCUR'96},
  series	= {Lecture Notes in Computer Science},
  volume	= {1119},
  year		= {1996},
  added		= {1998-01-22-10-35-50}
}

@InProceedings{	  DJanin:97,
  author	= {D.~Janin},
  title		= {Automata, tableaus and a reduction theorem for fixpoint
		  calculi in arbitrary complete lattices},
  booktitle	= {IEEE Symp. on Logic in Computer Science},
  year		= {1997},
  added		= {1998-01-22-10-35-50}
}

@InProceedings{	  DJanin:97b,
  author	= {D.~Janin},
  title		= {When the satisfiability problem for fixpoint expressions
		  in complete ordered sets is simple},
  booktitle	= {CSL'97},
  year		= {1997},
  note		= {Submitted to the proceedings},
  added		= {1998-01-22-10-35-50}
}

@InProceedings{	  Dassow-Habel-Taubenberger:95,
  ATTENTION	= {newer record added: Jul 30, 1996},
  author	= {J{\"u}rgen Dassow and Annegret Habel and Stefan
		  Taubenberger},
  title		= {Chain-Code Pictures and Collages Generated by Hyperedge
		  Replacement},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  year		= {1995},
  note		= {To appear},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Dassow-Habel-Taubenberger:96,
  author	= {J{\"u}rgen Dassow and Annegret Habel and Stefan
		  Taubenberger},
  title		= {Chain-Code Pictures and Collages Generated by Hyperedge
		  Replacement},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  number	= {1073},
  pages		= {412--427},
  year		= {1996},
  added		= {1996-07-30-13-31-20}
}

@Article{	  Dassow-Paun:89,
  author	= {J. Dassow and G. Paun},
  title		= {Regulated rewriting in formal language theory},
  series	= {EATCS},
  number	= {18},
  year		= {1989},
  publisher	= {Springer-Verlag},
  added		= {1996-08-02-14-49-29}
}

@Article{	  Dassow:89,
  author	= {J{\"u}rgen Dassow},
  title		= {Graph-Theoretic Properties and Chain Code Picture
		  Languages},
  journal	= {Journal of Information Processing and Cybernetics EIK},
  volume	= {25},
  pages		= {423--433},
  year		= {1989},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  David-Drewes-Kreowski:93,
  author	= {Gnanamalar David and Frank Drewes and Hans-J{\"o}rg
		  Kreowski},
  title		= {Hyperedge Replacement with Rendezvous},
  editor	= {P. Jouannaud},
  booktitle	= {Theory and Practice of Software Development},
  series	= {Lecture Notes in Computer Science},
  volume	= {668},
  pages		= {167--181},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@Book{		  DeMarco:79,
  author	= {T. DeMarco},
  title		= {Structured Analysis and System Specification},
  year		= {1979},
  publisher	= {Yourdon Press, New York, NY},
  added		= {1996-08-02-14-49-29}
}

@Article{	  Degano-Montanari:87,
  author	= {P. Degano and Ugo Montanari},
  title		= {A Model of Distributed Systems based of Graph Rewriting},
  journal	= {Journal of the ACM},
  volume	= {34},
  pages		= {411--449},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Dehnert-Franck-Streng:75,
  author	= {Ernst Dehnert and Reinhold Franck and W. Streng},
  title		= {{PLAN2D} --- Towards a Two-Dimensional Programming
		  Language},
  series	= {Lecture Notes in Computer Science},
  volume	= {26},
  pages		= {202--213},
  year		= {1975},
  added		= {1996-03-13-10-09-20}
}

@Article{	  DellaVigna-Ghezzi:78,
  ATTENTION	= {newer record added: Jul 30, 1996},
  author	= {Pierluigi {Della Vigna} and Carlo Ghezzi},
  title		= {Context-Free Graph Grammars},
  journal	= {Information and Control},
  volume	= {37},
  pages		= {207--233},
  year		= {1978},
  added		= {1996-03-13-10-09-20}
}

@Article{	  DellaVigna-Ghezzi:78b,
  author	= {P. {Della Vigna} and C. Ghezzi},
  title		= {Context Free Graph Grammars},
  journal	= {Information and Control},
  volume	= {37},
  pages		= {207--233},
  year		= {1978},
  added		= {1996-03-28-11-35-01}
}

@InProceedings{	  Derk-DeBrunner:96,
  author	= {Derk, M.D. and DeBrunner, L.S.},
  title		= {Reconfiguration Graph Grammars for Massively Parallel,
		  Fault Tolerant Computers},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {185--195},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@Book{		  Diestel:90,
  author	= {R. Diestel},
  title		= {Graph Decompositions: {A} Study in Infinite Graph Theory},
  year		= {1990},
  publisher	= {Oxford University Press},
  address	= {Oxford},
  added		= {1996-03-28-11-35-01}
}

@TechReport{	  Ditt-Kreowski-Weber:88,
  author	= {Wolfgang Ditt and Hans-J{\"o}rg Kreowski and H. Weber},
  title		= {A Graph Grammar Approach to Conceptual Database Schemata
		  Definition},
  number	= {247/88},
  year		= {1988},
  institution	= {University of Dortmund},
  type		= {Technical Report},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Doerr:92,
  author	= {H. D{\"o}rr},
  title		= {Monitoring with Graph-Grammars as formal operational
		  Models},
  number	= {92-19-27},
  year		= {1992},
  institution	= {Institut fur Informatik, Freie Universit{\"a}t Berlin,
		  Germany},
  added		= {1996-04-16-07-34-15}
}

@InProceedings{	  Doerr:95,
  author	= {Heiko D{\"o}rr},
  title		= {Bypass Strong {V}-Structures and Find an Isomorphic
		  Labelled Subgraph in Linear Time},
  editor	= {W. {Mayr, Ernst} and Gunter Schmidt and Gottfried
		  Tinhofer},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {903},
  pages		= {305--318},
  year		= {1995},
  added		= {1996-03-13-10-09-20}
}

@Book{		  Doerr:95b,
  author	= {Heiko D{\"o}rr},
  title		= {Efficient Graph Rewriting and its Implementation},
  series	= {Lecture Notes in Computer Science},
  volume	= {922},
  year		= {1995},
  publisher	= {Springer-Verlag},
  address	= {Berlin},
  note		= {Doctoral dissertation},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Does-Lindenmayer:83,
  author	= {Mark de Does and A. Lindenmayer},
  title		= {Algorithms for the Generation and Drawing of Maps
		  Representing Cell Clones},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {153},
  pages		= {39--58},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Doner:70,
  author	= {J. Doner},
  title		= {Tree Acceptors and Some of Their Applications},
  journal	= {Journal of Computer and System Sciences},
  volume	= {4},
  pages		= {406--451},
  year		= {1970},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Drewes-Engelfriet:96,
  author	= {Drewes, Frank and Engelfriet, Joost},
  title		= {Decidability of the Finiteness of Ranges of Tree
		  Transductions},
  number	= {9/96},
  year		= {1996},
  institution	= {Univ.\ Bremen},
  type		= {Report},
  added		= {1998-01-22-10-35-50}
}

@Article{	  Drewes-Habel-Kreowski.ea:93,
  author	= {Frank Drewes and Annegret Habel and Hans-J{\"o}rg Kreowski
		  and Stefan Taubenberger},
  title		= {A Sketch of Collage Grammars},
  journal	= {Bulletin of the {EATCS}},
  volume	= {50},
  pages		= {209--219},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Drewes-Habel-Kreowski.ea:93b,
  author	= {Frank Drewes and Annegret Habel and Hans-J{\"o}rg Kreowski
		  and Stefan Taubenberger},
  title		= {Generating self-affine fractals by collage grammars},
  number	= {3/93},
  year		= {1993},
  institution	= {Univ. Bremen},
  type		= {Report},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Drewes-Habel-Kreowski.ea:94,
  author	= {Frank Drewes and Annegret Habel and Hans-J{\"o}rg Kreowski
		  and Stefan Taubenberger},
  title		= {Generating self-affine fractals by collage grammars},
  editor	= {G. Rozenberg and A. Salomaa},
  booktitle	= {Proc. Developments in Language Theory 93. At the
		  Crossroads of Mathematics, Computer Science and Biology},
  pages		= {278--289},
  year		= {1994},
  publisher	= {World Scientific},
  note		= {Long version in {\it Theoretical Computer Science} 145},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Drewes-Habel-Kreowski.ea:95,
  author	= {Frank Drewes and Annegret Habel and Hans-J{\"o}rg Kreowski
		  and Stefan Taubenberger},
  title		= {Generating Self-Affine Fractals by Collage Grammars},
  journal	= {Theoretical Computer Science},
  volume	= {145},
  pages		= {159--187},
  year		= {1995},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Drewes-Habel-Kreowski:96,
  ATTENTION	= {newer record added: Mar 17, 1997},
  author	= {Frank Drewes and Annegret Habel and Hans-J{\"o}rg
		  Kreowski},
  title		= {Hyperedge Replacement Graph Grammars},
  editor	= {G. Rozenberg},
  booktitle	= {Handbook of Graph Transformations. Vol.\ {I}: Foundations},
  year		= {1996},
  publisher	= {World Scientific},
  note		= {To appear},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Drewes-Habel-Kreowski:97,
  author	= {Drewes, Frank and Habel, Annegret and Kreowski,
		  Hans-J\"org},
  title		= {Hyperedge Replacement Graph Grammars},
  editor	= {Rozenberg, G.},
  booktitle	= {Handbook of Graph Grammars and Computing by Graph
		  Transformation. Vol.\ {I}: Foundations},
  chapter	= {2},
  pages		= {95--162},
  year		= {1997},
  publisher	= {World Scientific},
  added		= {1997-03-17-16-11-19}
}

@InProceedings{	  Drewes-Kreowski-Kuske:92,
  author	= {Frank Drewes and Hans-J{\"o}rg Kreowski and S. Kuske},
  title		= {Hyperedge Replacement: {A} Basis for Efficient Graph
		  Algorithms},
  editor	= {M. Beyer and H. Ehrig and M. L{\"o}we},
  booktitle	= {Computing by Graph Transformation ({COMPUGRAPH}) ---
		  Survey, Results, and Applications},
  year		= {1992},
  note		= {Project brochure},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Drewes-Kreowski-Lapoire:97,
  author	= {Drewes, Frank and Kreowski, Hans-J\"org and Lapoire,
		  Denis},
  title		= {Criteria to Disprove Context-Freeness of Collage
		  Languages},
  editor	= {Chlebus, B.S. and Czaja, L.},
  booktitle	= {Proc.\ Fundamentals of Computation Theory {XI}},
  series	= {Lecture Notes in Computer Science},
  volume	= {1279},
  pages		= {169--178},
  year		= {1997},
  added		= {1997-09-01-16-46-57}
}

@InProceedings{	  Drewes-Kreowski-Schwabe:96,
  author	= {Frank Drewes and Hans-J{\"o}rg Kreowski and Nils Schwabe},
  title		= {{COLLAGE-ONE}: {A} System for Evaluation and Visualisation
		  of Collage Grammars},
  booktitle	= {Proc. 4th International Conference on Computer Graphics \&
		  Image Processing GKPO'96},
  series	= {Machine Graphics \& Vision},
  volume	= {5},
  pages		= {393--402},
  year		= {1996},
  publisher	= {Polish Academy of Sciences},
  address	= {Warsaw, Poland},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Drewes-Kreowski:91,
  author	= {Frank Drewes and Hans-J{\"o}rg Kreowski},
  title		= {A Note on Hyperedge Replacement},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Proc. Fourth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {1--11},
  year		= {1991},
  publisher	= {Springer},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Drewes-Kreowski:96,
  author	= {Frank Drewes and Hans-J{\"o}rg Kreowski},
  title		= {({U}n-)Decidability of Geometric Properties of Pictures
		  Generated by Collage Grammars},
  journal	= {Fundamenta Informaticae},
  volume	= {25},
  pages		= {295--325},
  year		= {1996},
  added		= {1996-06-06-08-59-00}
}

@TechReport{	  Drewes:90,
  author	= {F. Drewes},
  title		= {Parsing ordered graphs generated by hyperedge
		  replacement},
  number	= {10/90},
  year		= {1990},
  institution	= {Univ. Bremen},
  type		= {Report},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Drewes:90b,
  author	= {F. Drewes},
  title		= {Unique decompositions of hypergraphs},
  number	= {14/90},
  year		= {1990},
  institution	= {Univ. Bremen},
  type		= {Report},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Drewes:91,
  author	= {F. Drewes},
  title		= {Recognising $k$--connected hypergraphs in cubic time},
  number	= {3/91},
  year		= {1991},
  institution	= {Univ. Bremen},
  type		= {Report},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Drewes:93,
  author	= {Frank Drewes},
  title		= {A lower bound on the growth of functions computed by tree
		  transducers},
  number	= {4/93},
  year		= {1993},
  institution	= {Univ. Bremen},
  type		= {Report},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Drewes:93b,
  author	= {Frank Drewes},
  title		= {{NP}-completeness of $k$-connected hyperedge-replacement
		  languages of order $k$},
  journal	= {Information Processing Letters},
  volume	= {45},
  pages		= {89--94},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Drewes:93c,
  author	= {Frank Drewes},
  title		= {Recognising $k$--connected hypergraphs in cubic time},
  journal	= {Theoretical Computer Science},
  volume	= {109},
  pages		= {83--122},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Drewes:93d,
  author	= {Frank Drewes},
  title		= {Transducibility---Symbolic Computation by
		  Tree-Transducers},
  year		= {1993},
  institution	= {Bremen},
  type		= {Technical Report},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Drewes:94,
  author	= {Frank Drewes},
  title		= {A lower bound on the growth of functions computed by tree
		  transductions},
  editor	= {S. Tison},
  booktitle	= {Proc. {CAAP} 94},
  series	= {Lecture Notes in Computer Science},
  volume	= {787},
  pages		= {100--114},
  year		= {1994},
  publisher	= {Springer},
  note		= {Revised version to appear in {\it Fundamenta
		  Informaticae}},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Drewes:94b,
  author	= {Frank Drewes},
  title		= {The Use of Tree Transducers to Compute Translations
		  Between Graph Algebras},
  number	= {8/94},
  year		= {1994},
  institution	= {Univ. Bremen},
  type		= {Report},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Drewes:95,
  author	= {Frank Drewes},
  title		= {Semirings and Tree-to-Graph-to-Tree Transductions},
  editor	= {A. Corradini and U. Montanari},
  booktitle	= {Proc.\ Joint {COMPUGRAPH/SEMAGRAPH} Workshop on Graph
		  Rewriting and Computation ({SEGRAGRA '95})},
  journal	= {Electronic Notes in Theoretical Computer Science},
  volume	= {2},
  pages		= {8 pages},
  year		= {1995},
  publisher	= {Elsevier Science},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Drewes:96,
  author	= {Frank Drewes},
  title		= {A lower bound on the growth of functions computed by tree
		  transducers},
  journal	= {Fundamenta Informaticae},
  volume	= {26},
  pages		= {267--286},
  year		= {1996},
  note		= {Short version in {LNCS} 787 ({CAAP} 94)},
  added		= {1996-03-13-10-09-20}
}

@Booklet{	  Drewes:96b,
  author	= {Frank Drewes},
  title		= {Computation by Tree Transductions},
  year		= {1996},
  address	= {University of Bremen, Germany},
  howpublished	= {Doctoral dissertation},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Drewes:96c,
  author	= {Frank Drewes},
  title		= {Language Theoretic and Algorithmic Properties of
		  $d$-dimensional Collages and Patterns in a Grid},
  journal	= {Journal of Computer and System Sciences},
  volume	= {53},
  number	= {1},
  pages		= {33--60},
  year		= {1996},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Drewes:96d,
  author	= {Frank Drewes},
  title		= {On the Connectedness of Pictures Defined by Iterated
		  Function Systems},
  editor	= {Dassow, J. and Rozenberg, G. and Salomaa, A.},
  booktitle	= {Proc.\ 2nd Intl.\ Conference on Developments in Language
		  Theory---{A}t the Crossroads of Mathematics, Computer
		  Science and Biology},
  pages		= {289--298},
  year		= {1996},
  publisher	= {World Scientific},
  address	= {Singapore},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Drewes:96e,
  author	= {Frank Drewes},
  title		= {The Use of Tree Transducers to Compute Translations
		  Between Graph Algebras},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp.\ Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {196--210},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-07-08-16-34-22}
}

@TechReport{	  Drewes:97,
  author	= {Drewes, Frank},
  title		= {A Characterization of the Sets of Hypertrees Generated by
		  Hyperedge-Replacement Graph Grammars},
  number	= {3/97},
  year		= {1997},
  institution	= {Univ.\ Bremen},
  type		= {Report},
  added		= {1997-06-05-11-19-39}
}

@InProceedings{	  Drewes:97b,
  author	= {Drewes, Frank},
  title		= {On the Generation of Trees by Hyperedge Replacement},
  editor	= {Pr\'{\i}vara, I. and Ru\v{z}i\v{c}ka, P.},
  booktitle	= {Proc.\ Mathematical Foundations of Computer Science 1997},
  series	= {Lecture Notes in Computer Science},
  volume	= {1295},
  pages		= {229--238},
  year		= {1997},
  added		= {1997-09-01-16-46-57}
}

@Article{	  Early:70,
  author	= {J. Early},
  title		= {An Efficient Context-free Parsing Algorithm},
  journal	= {Communications of the Association for Computing
		  Machinery},
  volume	= {13},
  number	= {2},
  pages		= {94--102},
  year		= {1970},
  added		= {1996-03-28-11-35-01}
}

@InProceedings{	  Ehrenfeucht-Harju-Rozenberg:96,
  author	= {Ehrenfeucht, A. and Harju, T. and Rozenberg, Grzegorz},
  title		= {Group Based Graph Transformations and Hierarchical
		  Representations of Graphs},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {502--520},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@InCollection{	  Ehrenfeucht-Harju-Rozenberg:97,
  author	= {Ehrenfeucht, A. and Harju, T. and Rozenberg, Grzegorz},
  title		= {2-Structures - a Framework for Decomposition and
		  Transformation of Graphs},
  editor	= {Rozenberg, G.},
  booktitle	= {Handbook of Graph Grammars and Computing by Graph
		  Transformation. Vol.\ {I}: Foundations},
  chapter	= {6},
  pages		= {401--478},
  year		= {1997},
  publisher	= {World Scientific},
  added		= {1997-03-17-16-11-19}
}

@Article{	  Ehrenfeucht-Main-Rozenberg:84,
  author	= {A. Ehrenfeucht and M. Main and Grzegorz Rozenberg},
  title		= {Restrictions on {NLC} Graph Grammars},
  journal	= {Theoretical Computer Science},
  volume	= {31},
  pages		= {211--223},
  year		= {1984},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Ehrig-Engels:95,
  ATTENTION	= {newer record added: Aug 02, 1996},
  author	= {Hartmut Ehrig and Gregor Engels},
  title		= {Pragmatic and Semantic Aspects of a Module Concept for
		  Graph Transformation Systems},
  year		= {1995},
  note		= {Submitted for publication},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Ehrig-Engels:95b,
  author	= {H. Ehrig and G. Engels},
  title		= {Towards a module concept for graph transformation system:
		  the software engineering perspective},
  editor	= {G. Valiente Feruglio et al.},
  booktitle	= {Proc. colloq. on graph transf. and its applic. to
		  comp.sc.},
  year		= {1995},
  institution	= {Universitat de les Illes Balears},
  address	= {Palma de Mallorca,Mar94},
  added		= {1996-08-02-14-49-29}
}

@InProceedings{	  Ehrig-Engels:96,
  author	= {Ehrig, Hartmut and Engels, Gregor},
  title		= {Pragmatic and Semantic Aspects of a Module Concept for
		  Graph Transformation Systems},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {137--154},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@InProceedings{	  Ehrig-Habel-Kreowski.ea:91,
  author	= {Hartmut Ehrig and Annegret Habel and Hans-J{\"o}rg
		  Kreowski and Francesco {Parisi-Presicce}},
  title		= {From Graph Grammars to High Level Replacement Systems},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {269--291},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Ehrig-Habel-Kreowski.ea:91b,
  author	= {Hartmut Ehrig and Annegret Habel and Hans-J{\"o}rg
		  Kreowski and Francesco {Parisi-Presicce}},
  title		= {Parallelism and Concurrency in High Level Replacement
		  Systems},
  journal	= {Mathematical Structures in Computer Science},
  volume	= {1},
  pages		= {361--404},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Ehrig-Habel-Kreowski:92,
  author	= {Hartmut Ehrig and Annegret Habel and Hans-J{\"o}rg
		  Kreowski},
  title		= {Introduction to Graph Grammars with Applications to
		  Semantic Networks},
  journal	= {Computers \& Mathematics with Applications},
  volume	= {23 (6-9)},
  pages		= {557--572},
  year		= {1992},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Ehrig-Habel-Rosen:86,
  author	= {Hartmut Ehrig and Annegret Habel and Barry K. Rosen},
  title		= {Concurrent Transformations of Relational Structures},
  journal	= {Fundamenta Informaticae},
  volume	= {IX},
  pages		= {13--50},
  year		= {1986},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Ehrig-Habel:83,
  author	= {Hartmut Ehrig and Annegret Habel},
  title		= {Concurrent Transformations of Graphs and Relational
		  Structures},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  pages		= {76--88},
  year		= {1983},
  publisher	= {Trauner Verlag},
  address	= {Linz},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Ehrig-Habel:86,
  author	= {Hartmut Ehrig and Annegret Habel},
  title		= {Graph Grammars with Application Conditions},
  editor	= {G. Rozenberg and A. Salomaa},
  booktitle	= {The Book of L},
  pages		= {87--100},
  year		= {1986},
  publisher	= {Springer-Verlag},
  address	= {Berlin},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Ehrig-Heckel-Korff.ea:96,
  author	= {Hartmut Ehrig and Reiko Heckel and Martin Korff and Leila
		  Ribeiro and Annika Wagner},
  title		= {Algebraic Approach to Graph Transformations 1: Tutorial
		  Introduction and Single-Pushout Approach},
  year		= {1996},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Ehrig-Heckel-Korff.ea:97,
  author	= {Ehrig, H. and Heckel, R. and Korff, M. and L{\"o}we, M.
		  and Ribeiro, L. and Wagner, A. and Corradini, A.},
  title		= {Algebraic Approaches to Graph Transformation {II}: Single
		  Pushout Approach and Comparison with Double Pushout
		  Approach},
  editor	= {Rozenberg, G.},
  booktitle	= {The Handbook of Graph Grammars and Computing by Graph
		  Transformation, Volume 1: Foundations},
  year		= {1997},
  publisher	= {World Scientific},
  added		= {1998-01-22-10-35-50}
}

@TechReport{	  Ehrig-Korff-Loewe:90,
  author	= {H. Ehrig and M. Korff and M. L{\"o}we},
  title		= {Tutorial introduction to the algebraic approach of graph
		  grammars based on double and single pushouts},
  number	= {90/21},
  year		= {1990},
  institution	= {Technische Universit{\"a}t Berlin},
  added		= {1996-08-02-14-49-29}
}

@InProceedings{	  Ehrig-Korff-Loewe:91,
  author	= {Hartmut Ehrig and Martin Korff and Michael L{\"o}we},
  title		= {Tutorial Introduction to the Algebraic Approach of Graph
		  Grammars Based on Double and Single Pushouts},
  editor	= {H. Ehrig and Hans-J{\"o}rg Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {24--37},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Ehrig-Kreowski-Maggiolo-Schettini.ea:81,
  author	= {Hartmut Ehrig and Hans-J{\"o}rg Kreowski and Andrea
		  {Maggiolo-Schettini} and Barry K. Rosen and J\'ozef
		  Winkowski},
  title		= {Transformations of Structures: An Algebraic Approach},
  journal	= {Mathematical Systems Theory},
  volume	= {14},
  pages		= {305--334},
  year		= {1981},
  added		= {1996-03-13-10-09-20}
}

@Proceedings{	  Ehrig-Kreowski-Rozenberg:91,
  title		= {Graph Grammars and Their Application to Computer Science},
  editor	= {Hartmut Ehrig and Hans-J{\"o}rg Kreowski and Grzegorz
		  Rozenberg},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@Unpublished{	  Ehrig-Kreowski-Taentzer:93,
  author	= {H. Ehrig and Hans-J{\"o}rg Kreowski and G. Taentzer},
  title		= {Canonical Derivations for High-level Replacement Sytems},
  year		= {1993},
  note		= {Submitted},
  added		= {1996-03-28-11-35-01}
}

@InProceedings{	  Ehrig-Kreowski-Taentzer:94,
  author	= {Hartmut Ehrig and Hans-J{\"o}rg Kreowski and Gabriele
		  Taentzer},
  title		= {Canonical Derivatiopns for High-Level Replacement
		  Systems},
  editor	= {Hans J{\"u}rgen Schneider and Hartmut Ehrig},
  booktitle	= {Graph Transformations in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {776},
  pages		= {153--169},
  year		= {1994},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Ehrig-Kreowski:75,
  author	= {Hartmut Ehrig and Hans-J{\"o}rg Kreowski},
  title		= {{Church-Rosser} Theorems Leading to Parallel and Canonical
		  Derivations in Graph Grammars},
  number	= {75-27},
  year		= {1975},
  institution	= {Berlin},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Ehrig-Kreowski:76,
  author	= {Hartmut Ehrig and Hans-J{\"o}rg Kreowski},
  title		= {Parallel Graph Grammars},
  editor	= {A. Lindenmayer and G. Rozenberg},
  booktitle	= {Automata, Languages, Development},
  pages		= {425--442},
  year		= {1976},
  publisher	= {North Holland},
  address	= {Amsterdam},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Ehrig-Kreowski:76b,
  author	= {Hartmut Ehrig and Hans-J{\"o}rg Kreowski},
  title		= {Parallelism of Manipulations in Multidimensional
		  Information Structures},
  editor	= {A. Mazurkiewicz},
  booktitle	= {Mathematical Foundations of Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {45},
  pages		= {284--293},
  year		= {1976},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Ehrig-Kreowski:79,
  author	= {Hartmut Ehrig and Hans-J{\"o}rg Kreowski},
  title		= {Pushout-Properties: An Analysis of Gluing Constructions
		  for Graphs},
  journal	= {Mathematische Nachrichten},
  volume	= {91},
  pages		= {135--149},
  year		= {1979},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Ehrig-Kreowski:80,
  author	= {Hartmut Ehrig and Hans-J{\"o}rg Kreowski},
  title		= {Applications of Graph Grammar Theory to Consistency,
		  Synchronization and Scheduling in Data Base Systems},
  journal	= {Information Systems},
  volume	= {5},
  pages		= {225--238},
  year		= {1980},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Ehrig-Loewe:91,
  author	= {Hartmut Ehrig and Michael L{\"o}we},
  title		= {Computing by Graph Transformation: Overall Aims and New
		  Results},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {688--703},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Ehrig-Loewe:93,
  author	= {Hartmut Ehrig and Michael L{\"o}we},
  title		= {Categorical Principles, Techniques and Results for
		  High-Level-Replacement Systems in Computer Science},
  journal	= {Applied Categorical Structures},
  volume	= {1},
  pages		= {21--50},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Ehrig-Loewe:93b,
  author	= {Hartmut Ehrig and Michael L{\"o}we},
  title		= {Parallel and Distributed Derivations in the Single-Pushout
		  Approach},
  journal	= {Theoretical Computer Science},
  volume	= {109},
  pages		= {123--143},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Ehrig-Loewe:93c,
  author	= {Hartmut Ehrig and Michael L{\"o}we},
  title		= {The {ESPRIT} Basic Research Working Group {COMPUGRAPH}
		  ``Computing by Graph Transformation'': {A} Survey},
  journal	= {Theoretical Computer Science},
  volume	= {109},
  pages		= {3--6},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@Proceedings{	  Ehrig-Nagl-Rozenberg.ea:87,
  title		= {Graph Grammars and Their Application to Computer Science},
  editor	= {Hartmut Ehrig and Manfred Nagl and Grzegorz Rozenberg and
		  Azriel Rosenfeld},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@Proceedings{	  Ehrig-Nagl-Rozenberg:83,
  title		= {Graph Grammars and Their Application to Computer Science},
  editor	= {Hartmut Ehrig and Manfred Nagl and Grzegorz Rozenberg},
  series	= {Lecture Notes in Computer Science},
  volume	= {153},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Ehrig-Parisi-Presicce:91,
  author	= {Hartmut Ehrig and Francesco {Parisi-Presicce}},
  title		= {Algebraic Specification Grammars: {A} Junction between
		  Module Specifications and Graph Grammars},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {292--310},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Ehrig-Pfender-Schneider:73,
  author	= {Hartmut Ehrig and M. Pfender and H. J. Schneider},
  title		= {Graph Grammars: An Algebraic Approach},
  booktitle	= {IEEE Conf. on Automata and Switching Theory},
  pages		= {167--180},
  year		= {1973},
  address	= {Iowa City},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Ehrig-Rosen:76,
  author	= {Hartmut Ehrig and Barry K. Rosen},
  title		= {Commutativity of Independent Transformations on Complex
		  Objects},
  number	= {RC 6251},
  year		= {1976},
  institution	= {Yorktown Heights},
  type		= {IBM Research Report},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Ehrig-Rosen:78,
  author	= {Hartmut Ehrig and Barry K. Rosen},
  title		= {Concurrency of Manipulation in Multidimensional
		  Information Structures},
  editor	= {J. Winkowski},
  booktitle	= {Mathematical Foundations of Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {64},
  pages		= {165--176},
  year		= {1978},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Ehrig-Rosen:79,
  author	= {Hartmut Ehrig and Barry K. Rosen},
  title		= {Commutativity, Parallelism and Concurrency for
		  Transformations of Structures},
  number	= {79-21},
  year		= {1979},
  institution	= {Berlin},
  type		= {Report},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Ehrig-Rosen:79b,
  author	= {Hartmut Ehrig and Barry K. Rosen},
  title		= {Decomposition of Graph Grammars, Productions and
		  Derivations},
  editor	= {V. Claus and H. Ehrig and G. Rozenberg},
  booktitle	= {Graph-Grammars and Their Application to Computer Science
		  and Biology},
  series	= {Lecture Notes in Computer Science},
  volume	= {73},
  pages		= {192--205},
  year		= {1979},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Ehrig-Rosen:80,
  author	= {Hartmut Ehrig and Barry K. Rosen},
  title		= {Parallelism and Concurrency of Graph Manipulations},
  journal	= {Theoretical Computer Science},
  volume	= {11},
  pages		= {247--275},
  year		= {1980},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Ehrig-Rosen:80b,
  author	= {Hartmut Ehrig and Barry K. Rosen},
  title		= {The Mathematics of Record Handling},
  journal	= {SIAM Journal on Computing},
  volume	= {9},
  number	= {3},
  pages		= {441--469},
  year		= {1980},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Ehrig-Rozenberg:76,
  author	= {Hartmut Ehrig and Grzegorz Rozenberg},
  title		= {Some Definitional Suggestions for Parallel Graph
		  Grammars},
  editor	= {A Lindenmayer and G. Rozenberg},
  booktitle	= {Automata, Languages, Development},
  pages		= {443--468},
  year		= {1976},
  publisher	= {North Holland},
  address	= {Amsterdam},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Ehrig-Staples:83,
  ATTENTION	= {newer record added: Apr 16, 1996},
  author	= {Hartmut Ehrig and J. Staples},
  title		= {{Church-Rosser} Properties for Graph Replacement Systems
		  with Unique Splitting},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {153},
  pages		= {82--101},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Ehrig-Staples:83b,
  author	= {Hartmut Ehrig and John Staples},
  title		= {{Church-Rosser} properties for graph replacement systems
		  with unique splitting},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science,
		  2nd International Workshop},
  series	= {Lecture Notes in Computer Sciences},
  number	= {153},
  pages		= {82--101},
  year		= {1983},
  added		= {1996-04-16-07-34-15}
}

@InCollection{	  Ehrig-Taentzer:92,
  author	= {Hartmut Ehrig and Gabriele Taentzer},
  title		= {From Parallel Graph Grammars to Parallel High-Level
		  Replacement Systems},
  editor	= {G. Rozenberg and A. Salomaa},
  booktitle	= {Lindenmayer Systems},
  pages		= {283--304},
  year		= {1992},
  publisher	= {Springer-Verlag},
  address	= {Berlin},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Ehrig-Tischer:74,
  author	= {Hartmut Ehrig and Karl Wilhelm Tischer},
  title		= {Graph Grammars for the Specialization of Organisms},
  booktitle	= {Proc. Conf. Biologocally Motivated Automata Theory},
  pages		= {158--165},
  year		= {1974},
  organization	= {MITRE Corp.},
  address	= {McLean, Va.},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Ehrig-Tischer:75,
  author	= {Hartmut Ehrig and Karl Wilhelm Tischer},
  title		= {Graph Grammars and Applications to Specialization and
		  Evolution in Biology},
  journal	= {Journal of Computer and System Sciences},
  volume	= {11},
  pages		= {212--236},
  year		= {1975},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Ehrig:77,
  author	= {Hartmut Ehrig},
  title		= {Embedding Theorems in the Algebraic Theory of Graph
		  Grammars},
  editor	= {M. Karpi\'nski},
  booktitle	= {Fundamentals of Computation Theory},
  series	= {Lecture Notes in Computer Science},
  volume	= {56},
  pages		= {245--255},
  year		= {1977},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Ehrig:79,
  author	= {Hartmut Ehrig},
  title		= {Introduction to the Algebraic Theory of Graph Grammars},
  editor	= {V. Claus and H. Ehrig and G. Rozenberg},
  booktitle	= {Graph-Grammars and Their Application to Computer Science
		  and Biology},
  series	= {Lecture Notes in Computer Science},
  volume	= {73},
  pages		= {1--69},
  year		= {1979},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Ehrig:83,
  author	= {Hartmut Ehrig},
  title		= {Aspects of Concurrency in Graph Grammars},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {153},
  pages		= {58--81},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Ehrig:87,
  author	= {Hartmut Ehrig},
  title		= {Tutorial Introduction to the Algebraic Approach of
		  Graph-Grammars},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {3--14},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Ehrig:92,
  author	= {H. Ehrig},
  title		= {Introduction to Graph Grammars with Applications to
		  Semantic Networks},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  journal	= {Computer {M}athematical {A}pplications},
  series	= {Lecture Notes in Computer Science},
  volume	= {23},
  number	= {6-9},
  pages		= {557--5572},
  year		= {1992},
  publisher	= {Springer-Verlag},
  added		= {1996-04-16-07-34-15}
}

@InProceedings{	  Ellis-Willems:92,
  author	= {Gerard Ellis and Mark Willems},
  title		= {Analysing Semantic Networks Using Graph Grammars},
  booktitle	= {Working Notes for the AAAI Spring Symposium: Propositional
		  Knowledge Representation},
  year		= {1992},
  month		= mar # { 25-27},
  address	= {Stanford University},
  added		= {1996-04-16-07-34-15}
}

@Article{	  Engelfriet-Heyker-Leih:94,
  author	= {Joost Engelfriet and Linda Heyker and George Leih},
  title		= {Context-Free Graph Languages of Bounded Degree are
		  Generated by Apex Graph Grammars},
  journal	= {Acta Informatica},
  volume	= {31},
  pages		= {341--378},
  year		= {1994},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Engelfriet-Heyker:89,
  author	= {Joost Engelfriet and L. Heyker},
  title		= {The string generating power of context--free hypergraph
		  grammars},
  number	= {89-05},
  year		= {1989},
  institution	= {Univ. Leiden},
  type		= {Report},
  added		= {1996-03-28-11-35-01}
}

@TechReport{	  Engelfriet-Heyker:91,
  author	= {Joost Engelfriet and Linda Heyker},
  title		= {Hypergraph Languages of Bounded Degree},
  number	= {91-01},
  year		= {1991},
  institution	= {Leiden},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Engelfriet-Heyker:91b,
  author	= {Joost Engelfriet and Linda Heyker},
  title		= {The String Generating Power of Context-Free Hypergraph
		  Grammars},
  journal	= {Journal of Computer and System Sciences},
  volume	= {43},
  pages		= {328--360},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Engelfriet-Heyker:91c,
  author	= {Joost Engelfriet and Linda Heyker},
  title		= {The Term Generating Power of Context-Free Hypergraph
		  Grammars},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Proc. Fourth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {328--344},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Engelfriet-Heyker:92,
  author	= {Joost Engelfriet and Linda Heyker},
  title		= {Context-Free Hypergraph Grammars Have the Same
		  Term-Generating Power as Attribute Grammars},
  journal	= {Acta Informatica},
  volume	= {29},
  pages		= {161--210},
  year		= {1992},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Engelfriet-Heyker:94,
  author	= {Joost Engelfriet and Linda Heyker},
  title		= {Hypergraph Languages of Bounded Degree},
  journal	= {Journal of Computer and System Sciences},
  volume	= {48},
  pages		= {58--89},
  year		= {1994},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Engelfriet-Leih-Rozenberg:88,
  author	= {Joost Engelfriet and George Leih and Grzegorz Rozenberg},
  title		= {Apex Graph-Grammars and Attribute Grammars},
  journal	= {Acta Informatica},
  volume	= {25},
  pages		= {537--571},
  year		= {1988},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Engelfriet-Leih-Rozenberg:91,
  author	= {Joost Engelfriet and George Leih and Grzegorz Rozenberg},
  title		= {Nonterminal Separation in Graph Grammars},
  journal	= {Theoretical Computer Science},
  volume	= {82},
  pages		= {95--111, 537--571},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@Misc{		  Engelfriet-Leih-Welzl:87,
  author	= {Joost Engelfriet and George Leih and Emo Welzl},
  title		= {Characterization and Complexity of Boundary Graph
		  Languages},
  year		= {1987},
  address	= {Leiden},
  howpublished	= {Manuscript},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Engelfriet-Leih-Welzl:90,
  author	= {Joost Engelfriet and George Leih and Emo Welzl},
  title		= {Boundary Graph Grammars with Dynamic Edge Relabeling},
  journal	= {Journal of Computer and System Sciences},
  volume	= {40},
  pages		= {307--345},
  year		= {1990},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Engelfriet-Leih:88,
  author	= {Joost Engelfriet and George Leih},
  title		= {Nonterminal Bounded {NLC} Graph Grammars},
  journal	= {Theoretical Computer Science},
  volume	= {59},
  pages		= {309--315},
  year		= {1988},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Engelfriet-Leih:88b,
  author	= {Joost Engelfriet and G. Leih},
  title		= {Complexity of boundary graph languages},
  number	= {88-07},
  year		= {1988},
  institution	= {Univ. Leiden},
  type		= {Report},
  added		= {1996-03-28-11-35-01}
}

@Article{	  Engelfriet-Leih:89,
  author	= {Joost Engelfriet and George Leih},
  title		= {Linear Graph Grammars: Power and Complexity},
  journal	= {Information and Computation},
  volume	= {81},
  pages		= {88--121},
  year		= {1989},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Engelfriet-Leih:90,
  author	= {Joost Engelfriet and George Leih},
  title		= {Complexity of Boundary Graph Languages},
  journal	= {{RAIRO} Theoretical Informatics and Applications},
  volume	= {24},
  pages		= {267--274},
  year		= {1990},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Engelfriet-Rozenberg-Slutzki:80,
  author	= {Joost Engelfriet and Grzegorz Rozenberg and Giora
		  Slutzki},
  title		= {Tree transducers, {L} Systems, and Two-Way Machines},
  journal	= {Journal of Computer and System Sciences},
  volume	= {20},
  pages		= {150--202},
  year		= {1980},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Engelfriet-Rozenberg:90,
  author	= {Joost Engelfriet and Grzegorz Rozenberg},
  title		= {A Comparison of Boundary Graph Grammars and Context-Free
		  Hypergraph Grammars},
  journal	= {Information and Computation},
  volume	= {84},
  pages		= {163--206},
  year		= {1990},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Engelfriet-Rozenberg:91,
  author	= {Joost Engelfriet and Grzegorz Rozenberg},
  title		= {Graph Grammars Based on Node Rewriting: An Introduction to
		  {NLC} Graph Grammars},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {12--23},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Engelfriet-Rozenberg:96,
  ATTENTION	= {newer record added: Mar 17, 1997},
  author	= {Joost Engelfriet and Grzegorz Rozenberg},
  title		= {Node Replacement Graph Grammars},
  editor	= {G. Rozenberg},
  booktitle	= {Handbook of Graph Rewriting, Vol.~I: Foundations},
  year		= {1996},
  publisher	= {World Scientific},
  note		= {To appear},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Engelfriet-Rozenberg:97,
  author	= {Engelfriet, Joost and Rozenberg, Grzegorz},
  title		= {Node Replacement Graph Grammars},
  editor	= {Rozenberg, G.},
  booktitle	= {Handbook of Graph Grammars and Computing by Graph
		  Transformation. Vol.\ {I}: Foundations},
  chapter	= {1},
  pages		= {1--94},
  year		= {1997},
  publisher	= {World Scientific},
  added		= {1997-03-17-16-11-19}
}

@Article{	  Engelfriet-Schmidt:77,
  author	= {Joost Engelfriet and E. Schmidt},
  title		= {{IO} and {OI}},
  journal	= {Journal of Computer and System Sciences},
  volume	= {15},
  pages		= {328--353},
  year		= {1977},
  note		= {and Journal of Computer and System Sciences 16, 67-99,
		  1978},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Engelfriet-Vereijken:96,
  author	= {Engelfriet, Joost and Vereijken, Jan Joris},
  title		= {Concatenation of Graphs},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {368--382},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@Article{	  Engelfriet-Vogler:94,
  author	= {Joost Engelfriet and Heiko Vogler},
  title		= {The Translation Power of Top-Down Tree-to-Graph
		  Transducers},
  journal	= {Journal of Computer and System Sciences},
  volume	= {49},
  pages		= {258--305},
  year		= {1994},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Engelfriet-Vogler:96,
  author	= {Engelfriet, Joost and Vogler, Heiko},
  title		= {The Equivalence of Bottom-Up and Top-Down Tree-to-Graph
		  Transducers},
  number	= {TUD/FI96/17},
  year		= {1996},
  institution	= {TU Dresden},
  type		= {Tech.\ Report},
  added		= {1997-04-01-17-37-33}
}

@InProceedings{	  Engelfriet:89,
  author	= {Joost Engelfriet},
  title		= {Context-Free {NCE} Graph Grammars},
  editor	= {J. Csirik and J. Demetrovics and F. G\'ecseg},
  booktitle	= {Fundamentals of Computation Theory},
  series	= {Lecture Notes in Computer Science},
  volume	= {380},
  pages		= {148--161},
  year		= {1989},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Engelfriet:91,
  author	= {Joost Engelfriet},
  title		= {A Characterization of Context-Free {NCE} Graph Languages
		  by Monadic Second-Order Logic on Trees},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {311--327},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Engelfriet:91b,
  author	= {Joost Engelfriet},
  title		= {A Regular Characterization of Graph Languages Definable in
		  Monadic Second-Order Logic},
  journal	= {Theoretical Computer Science},
  volume	= {88},
  pages		= {139--150},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Engelfriet:92,
  author	= {Joost Engelfriet},
  title		= {A {G}reibach Normal Form for Context-Free Graph Grammars},
  editor	= {W. Kuich},
  booktitle	= {Automata, Languages and Programming},
  series	= {Lecture Notes in Computer Science},
  volume	= {623},
  pages		= {138--149},
  year		= {1992},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Engelfriet:94,
  author	= {Joost Engelfriet},
  title		= {Graph Grammars and Tree Transducers},
  editor	= {S. Tison},
  booktitle	= {CAAP'94},
  series	= {Lecture Notes in Computer Science},
  volume	= {787},
  pages		= {15--36},
  year		= {1994},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Engelfriet:97,
  author	= {Engelfriet, Joost},
  title		= {Context-Free Graph Grammars},
  editor	= {Rozenberg, G. and Salomaa, A.},
  booktitle	= {Handbook of Formal Languages. Vol.\ {III}: Beyond Words},
  chapter	= {3},
  pages		= {125--213},
  year		= {1997},
  publisher	= {Springer},
  added		= {1997-04-01-16-13-08}
}

@Article{	  Engels-Ehrig-Heckel.ea:97,
  author	= {Engels, G. and Ehrig, H. and Heckel, R. and Taentzer, G.},
  title		= {A Combined Reference Model- and View-Based Approach to
		  System Specification},
  journal	= {Int. Journal of Software and Knowledge Engeneering},
  year		= {1997},
  note		= {Accepted, to appear},
  added		= {1998-01-22-10-35-50}
}

@Article{	  Engels-Gall-Nagl.ea:83,
  author	= {Gregor Engels and Rupert Gall and Manfred Nagl and Wilhelm
		  Sch{\"a}fer},
  title		= {Software Specification Using Graph Grammars},
  journal	= {Computing},
  volume	= {31},
  pages		= {317--346},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Engels-Gogolla-Hohenstein.ea:92,
  author	= {Gregor Engels and Martin Gogolla and Uwe Hohenstein and
		  Klaus H{\"u}lsmann and Perdita L{\"o}hr-Richter and Gunter
		  Saake and Hans-Dieter Ehrich},
  title		= {Conceptual Modelling of Database Applications Using an
		  Extended {ER} Model},
  journal	= {Data \& Knowledge Engineering},
  volume	= {9},
  pages		= {157--204},
  year		= {1992},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Engels-Heckel-Taentzer.ea:97,
  author	= {Engels, G. and Heckel, R. and Taentzer, G. and Ehrig, H.},
  title		= {A View-Oriented Approach to System Modelling based on
		  Graph Transformation},
  booktitle	= {Proc. of ESEC/FSE'97, Z\"urich},
  series	= {LNCS},
  volume	= {1301},
  year		= {1997},
  publisher	= {Springer Verlag},
  added		= {1998-01-22-10-35-50}
}

@Article{	  Engels-Lewerentz-Nagl.ea:92,
  author	= {Gregor Engels and Claus Lewerentz and Manfred Nagl and
		  Wilhelm Sch{\"a}fer and Andy Sch{\"u}rr},
  title		= {Building Integrated Software Developments Part {I}: Tool
		  Specification},
  journal	= {ACM Transactions on Software Engineering and Methodology},
  volume	= {1},
  number	= {2},
  pages		= {135--167},
  year		= {1992},
  publisher	= {acm Press},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Engels-Lewerentz-Schaefer:87,
  author	= {Gregor Engels and Claus Lewerentz and W. Sch{\"a}fer},
  title		= {Graph Grammar Engineering: {A} Software Specification
		  Method},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {186--201},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Engels-Schaefer:85,
  author	= {Gregor Engels and Wilhelm Sch{\"a}fer},
  title		= {Graph Grammar Engineering: {A} Method Used for the
		  Development of the Integrated Programming Support
		  Environment},
  editor	= {H. Ehrig and C. Floyd and M. Nivat and J. Thatcher},
  booktitle	= {Formal Methods and Software Development},
  series	= {Lecture Notes in Computer Science},
  volume	= {186},
  pages		= {179--193},
  year		= {1985},
  added		= {1996-03-13-10-09-20}
}

@Book{		  Engels-Schaefer:89,
  author	= {Gregor Engels and Wilhelm Sch{\"a}fer},
  title		= {Programmentwicklungsumgebungen: Konzepte und
		  Realisierung},
  year		= {1989},
  publisher	= {Teubner},
  address	= {Stuttgart},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Engels-Schuerr:95,
  author	= {Gregor Engels and Andy Schuerr},
  title		= {Encapsulated Hierachical Graphs, Graph Types, and Meta
		  Types},
  booktitle	= {SEGRAGRA'95, Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph
		  Rewriting and Computation},
  series	= {Electronic Notes in Theoretical Computer Science},
  volume	= {2},
  year		= {1995},
  publisher	= {Elsevier},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Engels-Schuerr:95b,
  author	= {G. Engels and A. Schuerr},
  title		= {Encapsulated Hierarchical Graphs, Graph Types, and Meta
		  Types},
  number	= {95-21},
  year		= {1995},
  month		= jul,
  institution	= {Departement of Computer Science, Leiden University},
  address	= {P.O. Box 9512, 2300 RA Leiden, The Netherlands},
  added		= {1996-04-16-07-34-15}
}

@PhDThesis{	  Engels:86,
  author	= {Gregor Engels},
  title		= {{Graphen als zentrale Datenstrukturen in einer
		  Software-Entwicklungsumgebung}},
  year		= {1986},
  school	= {Universit{\"a}t Osnabr{\"u}ck},
  note		= {VDI-Verlag},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Engels:91,
  author	= {Gregor Engels},
  title		= {Elementary Actions on an Extended Entity-Relationship
		  Database},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {344--362},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@Book{		  Even:79,
  author	= {Shimon Even},
  title		= {Graph Algorithms},
  year		= {1979},
  publisher	= {Computer Science Press},
  address	= {Rockville, Maryland},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Fahlman-Touretzky-Roggen:81,
  author	= {S. E. Fahlman and D. S. Touretzky and W. van Roggen},
  title		= {Cancellation in a Parallel Semantique Network},
  booktitle	= {Proceedings of the Seventh International Joint Conference
		  on Artificiale Intellingence, IJCAI'81},
  year		= {1981},
  added		= {1996-04-16-07-34-15}
}

@Article{	  Fahmy-Blostein:93,
  author	= {H. Fahmy and B. Blostein},
  title		= {A graph grammar programming style for recognition of music
		  notation},
  journal	= {Machine Vision and Application},
  volume	= {6},
  number	= {2},
  pages		= {83--99},
  year		= {1993},
  added		= {1996-08-02-14-49-29}
}

@InProceedings{	  Farrow-Kennedy-Zucconi:76,
  author	= {R. Farrow and K. Kennedy and L. Zucconi},
  title		= {Graph Grammars and Global Program Data Flow Analysis},
  booktitle	= {Proc. 17th Ann. IEEE Symp. on Found. of Comp. Sci.},
  pages		= {42--56},
  year		= {1976},
  address	= {Houston},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Feder:68,
  author	= {Jerome Feder},
  title		= {Languages of Encoded Line Patterns},
  journal	= {Information and Control},
  volume	= {13},
  pages		= {230--244},
  year		= {1968},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Feder:71,
  author	= {Jerome Feder},
  title		= {Plex Languages},
  journal	= {Information Sciences},
  volume	= {3},
  pages		= {225--241},
  year		= {1971},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Flasinski:88,
  author	= {Flasinski, Mariusz},
  title		= {Parsing of {edNLC}-Graph Grammars for Scene Analysis},
  journal	= {Pattern Recognition},
  volume	= {21},
  pages		= {623--629},
  year		= {1988},
  added		= {1997-09-10-17-02-53}
}

@Article{	  Flasinski:89,
  author	= {M. Flasi\'nski},
  title		= {Characteristics of {edNLC}-Graph Grammar for Syntactic
		  Pattern Recognition},
  journal	= {Computer Vision, Graphics, and Image Processing},
  volume	= {47},
  pages		= {1--21},
  year		= {1989},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Flasinski:90,
  author	= {Flasinski, Mariusz},
  title		= {Distorted Pattern Analysis with the Help of Node Label
		  Controlled Graph Languages},
  journal	= {Pattern Recognition},
  volume	= {23},
  pages		= {765--774},
  year		= {1990},
  added		= {1997-09-10-17-02-53}
}

@Article{	  Flasinski:93,
  author	= {Flasinski, Mariusz},
  title		= {On the Parsing of Deterministic Graph Languages for
		  Syntactic Pattern Recognition},
  journal	= {Pattern Recognition},
  volume	= {26},
  pages		= {1--16},
  year		= {1993},
  added		= {1997-09-10-17-02-53}
}

@Article{	  Flasinski:95,
  author	= {Flasinski, Mariusz},
  title		= {Use of Graph Grammars for the Description of Mechanical
		  Parts},
  journal	= {Computer Aided Design},
  volume	= {27},
  pages		= {403--433},
  year		= {1995},
  added		= {1997-09-10-17-02-53}
}

@Misc{		  Fonio:84,
  author	= {Harald-Reto Fonio},
  title		= {Amalgamation of Graph Transformations with Application to
		  Synchronization in Distributed Systems},
  year		= {1984},
  note		= {Master thesis, Berlin},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Fracchia-Prusinkiewicz:91,
  author	= {F. David Fracchia and Przemyslaw Prusinkiewicz},
  title		= {Physically-Based Graphical Interpretation of Marker
		  Cellwork {L}-Systems},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {363--377},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Fracchia:96,
  author	= {Fracchia, F. David},
  title		= {Integrating Lineage and Interaction for the Visualization
		  of Cellular Structures},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {521--535},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@InProceedings{	  Franck:76,
  author	= {Reinhold Franck},
  title		= {{PLAN2D} --- Syntactic Analysis of Precedence Graph
		  Grammars},
  booktitle	= {Proc. 3rd ACM Symp. on Principles of Programming
		  Languages},
  pages		= {134--139},
  year		= {1976},
  address	= {Atlanta},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Franck:78,
  author	= {Reinhold Franck},
  title		= {A Class of Linearly Parsable Graph Grammars},
  journal	= {Acta Informatica},
  volume	= {10},
  pages		= {175--201},
  year		= {1978},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Freund-Haberstroh:91,
  author	= {R. Freund and B. Haberstroh},
  title		= {Attributed Elementary Programmed Graph Grammars},
  editor	= {G. Schmidt and R. Berghammer},
  booktitle	= {Graph-Theoric Concepts in Computer Science, 17th
		  International Workshop, WG'91, Fishbachau, Germany},
  series	= {Lecture Notes in Computer Science},
  number	= {643},
  pages		= {75--84},
  year		= {1991},
  publisher	= {Springer-Verlag},
  added		= {1996-04-16-07-34-15}
}

@Article{	  Fu-Booth:75,
  author	= {K. S. Fu and T. L. Booth},
  title		= {Grammatical Inference: Introduction and Survey --- Part
		  {I} and {II}},
  journal	= {IEEE-Transactions on Systems, Man and Cybernetics},
  volume	= {5},
  pages		= {95--111 and 409--423},
  year		= {1975},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Furtado-Veloso:83,
  author	= {A. Furtado and P. A. S. Veloso},
  title		= {Specification of Data Bases Through Rewriting Rules},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {153},
  pages		= {102--114},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Furtado:79,
  author	= {A. Furtado},
  title		= {Transformations of Data Base Structures},
  editor	= {V. Claus and H. Ehrig and G. Rozenberg},
  booktitle	= {Graph-Grammars and Their Application to Computer Science
		  and Biology},
  series	= {Lecture Notes in Computer Science},
  volume	= {73},
  pages		= {224--236},
  year		= {1979},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Gaifman:82,
  author	= {H. Gaifman},
  title		= {On Local and Non-Local Properties},
  editor	= {J. Stern},
  booktitle	= {Proc. of the Herbrand Symposium, Logic Colloquium '81},
  pages		= {105--135},
  year		= {1982},
  publisher	= {North Holland Pub. Co.},
  added		= {1996-03-13-10-09-20}
}

@Book{		  Gecseg-Steinby:84,
  author	= {Ferenc G\'ecseg and Magnus Steinby},
  title		= {Tree Automata},
  year		= {1984},
  publisher	= {Akad\'emiai Kiad\'o},
  address	= {Budapest},
  added		= {1996-03-13-10-09-20}
}

@Book{		  Gibbons:85,
  author	= {Alan Gibbons},
  title		= {Algorithmic Graph Theory},
  year		= {1985},
  publisher	= {Cambridge University Press},
  address	= {Cambridge},
  added		= {1996-03-13-10-09-20}
}

@Book{		  Ginsburg:66,
  author	= {S. Ginsburg},
  title		= {The Mathematical Theory of Context-Free Languages},
  year		= {1966},
  publisher	= {McGraw-Hill},
  address	= {New York},
  added		= {1996-03-28-11-35-01}
}

@Book{		  Gips:75,
  author	= {James Gips},
  title		= {Shape Grammars and Their Uses, Artificial Perception,
		  Shape Generation and Computer Aesthetics},
  year		= {1975},
  publisher	= {Birk\-h{\"a}user Verlag},
  address	= {Basel},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Glaubert-Kennaway-Sleep:91,
  author	= {John Glaubert and Richard Kennaway and Ronan Sleep},
  title		= {{DACTL}: An Experimental Graph Rewriting Language},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {378--395},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Goettler-Guenther-Nieskens:91,
  author	= {Herbert G{\"o}ttler and Joachim G{\"u}nther and Georg
		  Nieskens},
  title		= {Use Graph Grammars to Design {CAD}-Systems!},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {396--410},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Goettler:83,
  author	= {Herbert G{\"o}ttler},
  title		= {Attributed Graph Grammars for Graphics},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {153},
  pages		= {130--142},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Goettler:87,
  author	= {Herbert G{\"o}ttler},
  title		= {Graph Grammars and Diagram Editing},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {216--231},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@Book{		  Goettler:88,
  author	= {Herbert G{\"o}ttler},
  title		= {Graphgrammatiken in der Softwaretechnik},
  series	= {Informatik-Fachberichte},
  volume	= {178},
  year		= {1988},
  publisher	= {Springer-Verlag},
  address	= {Berlin},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Goldstine:77,
  author	= {J. Goldstine},
  title		= {A Simplified Proof of {Parikh}'s Theorem},
  journal	= {Discrete Mathematics},
  volume	= {19},
  pages		= {235--239},
  year		= {1977},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Gottlieb-Furtado:74,
  author	= {C. Gottlieb and A. Furtado},
  title		= {Data Schemata Based on Directed Graphs},
  number	= {No.70},
  year		= {1974},
  institution	= {Dept. Comp. Sci., Univ. Toronto},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Grosse-Rhode-Presicce-Simeoni:97,
  author	= {Martin Grosse-Rhode and Francesco Parisi Presicce and
		  Marta Simeoni},
  title		= {A Simple notion of Refinement in Graph Transformation
		  Systems},
  number	= {10/97},
  year		= {1997},
  institution	= {Univ.\ Roma 'La Sapienza'},
  type		= {Report},
  added		= {1998-01-22-10-35-50}
}

@TechReport{	  Grosse-Rhode-Presicce-Simeoni:97b,
  author	= {Martin Grosse-Rhode and Francesco Parisi Presicce and
		  Marta Simeoni},
  title		= {Spatial and Temporal Refinement of Typed Graph
		  Transformation Systems},
  number	= {11/97},
  year		= {1997},
  institution	= {Univ.\ Roma 'La Sapienza'},
  type		= {Report},
  added		= {1998-01-22-10-35-50}
}

@Article{	  HLBodlaender-JEngelfriet:97,
  author	= {H.~L.~Bodlaender and J.~Engelfriet},
  title		= {Domino Treewidth},
  journal	= {J. of Algorithms},
  volume	= {24},
  pages		= {94--123},
  year		= {1997},
  added		= {1998-01-22-10-35-50}
}

@Article{	  Habel-Heckel-Taentzer:96,
  author	= {Annegret Habel and Reiko Heckel and Gabriele Taentzer},
  title		= {Graph Grammars with Negative Application Conditions},
  journal	= {Fundamenta Informaticae},
  volume	= {XXVII},
  year		= {1996},
  note		= {To appear},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Habel-Klempien-Hinrichs:96,
  author	= {Annegret Habel and Renate {Klempien-Hinrichs}},
  title		= {On the Replacement of Atomic Units in Hypergraphs},
  year		= {1996},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Habel-Kreowski-Lautemann:89,
  author	= {Annegret Habel and Hans-J{\"o}rg Kreowski and Clemens
		  Lautemann},
  title		= {A comparison of compatible, finite, and inductive graph
		  properties},
  number	= {7/89},
  year		= {1989},
  institution	= {Univ. Bremen},
  type		= {Report},
  added		= {1996-03-28-11-35-01}
}

@Article{	  Habel-Kreowski-Lautemann:93,
  author	= {Annegret Habel and Hans-J{\"o}rg Kreowski and Clemens
		  Lautemann},
  title		= {A Comparison of Compatible, Finite, and Inductive Graph
		  Properties},
  journal	= {Theoretical Computer Science},
  volume	= {110},
  pages		= {145--168},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Habel-Kreowski-Plump:88,
  author	= {Annegret Habel and Hans-J{\"o}rg Kreowski and Detlef
		  Plump},
  title		= {Jungle Evaluation},
  editor	= {D. Sannella and A. Tarlecki},
  booktitle	= {Recent Trends in Data Type Specification},
  series	= {Lecture Notes in Computer Science},
  volume	= {332},
  pages		= {92--112},
  year		= {1988},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Habel-Kreowski-Plump:91,
  author	= {Annegret Habel and Hans-J{\"o}rg Kreowski and Detlef
		  Plump},
  title		= {Jungle Evaluation},
  journal	= {Fundamenta Informaticae},
  volume	= {XV},
  pages		= {37--60},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Habel-Kreowski-Taubenberger:93,
  author	= {Annegret Habel and Hans-J{\"o}rg Kreowski and Stefan
		  Taubenberger},
  title		= {Collages and Patterns Generated by Hyperedge Replacement},
  journal	= {Languages of Design},
  volume	= {1},
  pages		= {125--145},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Habel-Kreowski-Vogler:87,
  author	= {Annegret Habel and Hans-J{\"o}rg Kreowski and Walter
		  Vogler},
  title		= {Compatible Graph Properties are Decidable for Hyperedge
		  Replacement Graph Languages},
  journal	= {Bull. EATCS},
  volume	= {33},
  pages		= {55--62},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Habel-Kreowski-Vogler:89,
  author	= {Annegret Habel and Hans-J{\"o}rg Kreowski and Walter
		  Vogler},
  title		= {Decidable Boundedness Problems for Hyperedge-Replacement
		  Graph Grammars},
  editor	= {J. D\'{\i}az and F. Orejas},
  booktitle	= {TAPSOFT '89},
  series	= {Lecture Notes in Computer Science},
  volume	= {351},
  pages		= {275--289},
  year		= {1989},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Habel-Kreowski-Vogler:89b,
  author	= {Annegret Habel and Hans-J{\"o}rg Kreowski and Walter
		  Vogler},
  title		= {Metatheorems for Decision Problems on Hyperedge
		  Replacement Graph Languages},
  journal	= {Acta Informatica},
  volume	= {26},
  pages		= {657--677},
  year		= {1989},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Habel-Kreowski-Vogler:91,
  author	= {Annegret Habel and Hans-J{\"o}rg Kreowski and Walter
		  Vogler},
  title		= {Decidable Boundedness Problems for Sets of Graphs
		  Generated by Hyperedge Replacement},
  journal	= {Theoretical Computer Science},
  volume	= {89},
  pages		= {33--62},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Habel-Kreowski-Wilharm:87,
  author	= {Annegret Habel and Hans-J{\"o}rg Kreowski and Anne
		  Wilharm},
  title		= {Bremen-Town Contributions to the Third {GRAGRA}
		  Proceedings},
  number	= {4/87},
  year		= {1987},
  institution	= {Bremen},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Habel-Kreowski:83,
  author	= {Annegret Habel and Hans-J{\"o}rg Kreowski},
  title		= {On Context-Free Graph Languages Generated by Edge
		  Replacement},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {153},
  pages		= {143--158},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Habel-Kreowski:87,
  author	= {Annegret Habel and Hans-J{\"o}rg Kreowski},
  title		= {Characteristics of Graph Languages Generated by Edge
		  Replacement},
  journal	= {Theoretical Computer Science},
  volume	= {51},
  pages		= {81--115},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Habel-Kreowski:87b,
  author	= {Annegret Habel and Hans-J{\"o}rg Kreowski},
  title		= {May We Introduce to You: Hyperedge Replacement},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Proc. Third Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {15--26},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Habel-Kreowski:87c,
  author	= {Annegret Habel and Hans-J{\"o}rg Kreowski},
  title		= {Some Structural Aspects of Hypergraph Languages Generated
		  by Hyperedge Replacement},
  editor	= {F. Brandenburg and G. {Vidal-Naquet} and M. Wirsing},
  booktitle	= {STACS 87},
  series	= {Lecture Notes in Computer Science},
  volume	= {247},
  pages		= {207--219},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Habel-Kreowski:88,
  author	= {Annegret Habel and Hans-J{\"o}rg Kreowski},
  title		= {Pretty Patterns Produced by Hyperedge Replacement},
  editor	= {H. G{\"o}ttler and H. J. Schneider},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {314},
  pages		= {32--45},
  year		= {1988},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Habel-Kreowski:89,
  author	= {Annegret Habel and Hans-J{\"o}rg Kreowski},
  title		= {Formale {G}raph-{S}prachen ({T}eil 1)},
  year		= {1989},
  institution	= {Bremen},
  type		= {{Material zur gleichnamigen Lehrveranstaltung im
		  Wintersemester 1989/90}},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Habel-Kreowski:90,
  author	= {Annegret Habel and Hans-J{\"o}rg Kreowski},
  title		= {Collages and Patterns Generated by Hyperedge Replacement},
  number	= {15/90},
  year		= {1990},
  institution	= {Bremen},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Habel-Kreowski:90b,
  author	= {Annegret Habel and Hans-J{\"o}rg Kreowski},
  title		= {Filtering Hyperedge-Replacement Languages Through
		  Compatible Properties},
  editor	= {M. Nagl},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {411},
  pages		= {107--120},
  year		= {1990},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Habel-Kreowski:91,
  author	= {Annegret Habel and Hans-J{\"o}rg Kreowski},
  title		= {Collage Grammars},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {411--429},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Habel-Plump:95,
  author	= {Annegret Habel and Detlef Plump},
  title		= {Unification, Rewriting, and Narrowing on Term Graphs},
  booktitle	= {SEGRAGRA'95, Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph
		  Rewriting and Computation},
  series	= {Electronic Notes in Theoretical Computer Science},
  volume	= {2},
  year		= {1995},
  publisher	= {Elsevier},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Habel-Plump:96,
  author	= {Annegret Habel and Detlef Plump},
  title		= {Graph Unification and Matching},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {75--88},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-07-08-16-34-22}
}

@Article{	  Habel-Plump:96b,
  author	= {Habel, Annegret and Plump, Detlef},
  title		= {Term Graph Narrowing},
  journal	= {Mathematical Structures in Computer Science},
  volume	= {6},
  pages		= {649--676},
  year		= {1996},
  added		= {1997-09-01-16-46-57}
}

@TechReport{	  Habel-Plump:96c,
  author	= {Habel, Annegret and Plump, Detlef},
  title		= {Term Graph Narrowing},
  year		= {1996},
  institution	= {Universit\"at Hildesheim},
  type		= {Report~14/96},
  added		= {1997-09-01-19-34-43}
}

@TechReport{	  Habel-Plump:97,
  author	= {Annegret Habel and Detlef Plump},
  title		= {Completeness of Narrowing in Non-copying Implementations},
  number	= {19/97},
  year		= {1997},
  institution	= {Universit\"at Hildesheim, Institut f\"ur Informatik},
  type		= {Informatik-Bericht},
  added		= {1998-01-05-18-25-23}
}

@TechReport{	  Habel:80,
  author	= {Annegret Habel},
  title		= {{Concurrency in Graph-Grammatiken}},
  number	= {80-11},
  year		= {1980},
  institution	= {Berlin},
  added		= {1996-03-13-10-09-20}
}

@Misc{		  Habel:81,
  author	= {Annegret Habel},
  title		= {{Komposition und Dekomposition von Produktionen zur
		  Manipulation von Graphen}},
  year		= {1981},
  note		= {Master thesis, Berlin},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Habel:89,
  author	= {Annegret Habel},
  title		= {Graph-Theoretic Properties Compatible with Graph
		  Derivations},
  editor	= {J. van Leeuwen},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {344},
  pages		= {11--29},
  year		= {1989},
  added		= {1996-03-13-10-09-20}
}

@PhDThesis{	  Habel:89b,
  author	= {Annegret Habel},
  title		= {Hyperedge Replacement: Grammars and Languages},
  year		= {1989},
  school	= {Bremen},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Habel:89c,
  author	= {Annegret Habel},
  title		= {Graph-Theoretic Properties Compatible with Graph
		  Derivations},
  series	= {Lecture Notes in Computer Science},
  volume	= {344},
  pages		= {11--29},
  year		= {1989},
  publisher	= {Springer},
  note		= {Proc. Int. Workshop {WG} 88},
  added		= {1996-03-28-11-35-01}
}

@Book{		  Habel:92,
  author	= {Annegret Habel},
  title		= {Hyperedge Replacement: Grammars and Languages},
  series	= {Lecture Notes in Computer Science},
  volume	= {643},
  year		= {1992},
  publisher	= {Springer-Verlag},
  address	= {Berlin},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Habel:92b,
  author	= {Annegret Habel},
  title		= {Hypergraph Grammars: Transformational and Algorithmic
		  Aspects},
  journal	= {Journal of Information Processing and Cybernetics EIK},
  volume	= {28},
  pages		= {241--277},
  year		= {1992},
  added		= {1996-03-13-10-09-20}
}

@Book{		  Harary:69,
  author	= {Frank Harary},
  title		= {Graph Theory},
  year		= {1969},
  publisher	= {Addison-Wesley},
  address	= {Reading, Mass.},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Harel:88,
  author	= {David Harel},
  title		= {On Visual Formalisms},
  journal	= {Communications of the Association for Computing
		  Machinery},
  volume	= {31(5)},
  pages		= {514--530},
  year		= {1988},
  added		= {1996-03-13-10-09-20}
}

@Book{		  Hartsfield-Ringel:90,
  author	= {Nora Hartsfield and Gerhard Ringel},
  title		= {Pearls in Graph Theory. {A} Comprehensive Introduction},
  year		= {1990},
  publisher	= {Academic Press},
  address	= {Boston},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Heckel-Ehrig-Wolter.ea:97,
  author	= {Heckel, R. and Ehrig, H. and Wolter, U. and Corradini,
		  A.},
  title		= {Double-Pullback Transitions and Coalgebraic Loose
		  Semantics for Graph Transformation Systems},
  journal	= {Applied Categorical Structures},
  year		= {1997},
  note		= {Submitted},
  added		= {1998-01-22-10-35-50}
}

@InProceedings{	  Heckel-Ehrig-Wolter.ea:97b,
  author	= {Heckel, R. and Ehrig, H. and Wolter, U. and Corradini,
		  A.},
  title		= {Integrating the Specification Techniques of Graph
		  Transformation and Temporal Logic},
  booktitle	= {Proc. of MFCS'97, Bratislava},
  series	= {LNCS},
  volume	= {1295},
  year		= {1997},
  publisher	= {Springer Verlag},
  added		= {1998-01-22-10-35-50}
}

@TechReport{	  Heckel-Ehrig-Wolter.ea:97c,
  author	= {Heckel, R. and Ehrig, H. and Wolter, U. and Corradini,
		  A.},
  title		= {Loose Semantics and Constraints for Graph Transformation
		  Systems},
  number	= {97-07},
  year		= {1997},
  institution	= {TU Berlin},
  note		= {{\tt
		  http://www.cs.tu-berlin.de/cs/ifb/TechnBerichteListe.html}},
  added		= {1998-01-22-10-35-50}
}

@InProceedings{	  Heimann-Joeris-Krapp.ea:95,
  author	= {P. Heimann and G. Joeris and C.-A. Krapp and B.
		  Westfechtel},
  title		= {A Programmed Graph Rewriting System for Software Process
		  Management},
  booktitle	= {Proceedings Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph
		  Rewriting and Computation (SEGRAGRA '95)},
  series	= {Electronic Notes in Theoretical Computer Science},
  volume	= {2},
  year		= {1995},
  added		= {1996-08-02-14-49-29}
}

@MastersThesis{	  Herbrecht:89,
  author	= {Herbrecht, R.},
  title		= {{Ein Graphgrammatikeditor}},
  year		= {1989},
  address	= {RWTH Aachen},
  type		= {Diplomarbeit},
  school	= {Lehrstuhl f{\"u}r Informatik III},
  added		= {1996-11-28-18-33-07}
}

@Book{		  Herrlich-Strecker:73,
  author	= {Horst Herrlich and George Strecker},
  title		= {Category Theory},
  year		= {1973},
  publisher	= {Allyn and Bacon},
  address	= {Boston},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Hess-Mayoh:90,
  author	= {L. Hess and B. Mayoh},
  title		= {The Four Musicians: Analogies and Experts Systems},
  editor	= {H. Erhig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  number	= {532},
  pages		= {430--445},
  year		= {1990},
  publisher	= {Springer-Verlag},
  added		= {1996-04-16-07-34-15}
}

@Misc{		  Himsolt:88,
  author	= {Michael Himsolt},
  title		= {{Entwicklung eines Grapheneditors}},
  year		= {1988},
  note		= {Master thesis, Universit{\"a}t Passau},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Himsolt:89,
  author	= {Michael Himsolt},
  title		= {{GraphEd}: An Interactive Graph Editor},
  editor	= {B. Monien and R. Cori},
  booktitle	= {STACS'89},
  series	= {Lecture Notes in Computer Science},
  volume	= {349},
  pages		= {532--533},
  year		= {1989},
  added		= {1996-03-13-10-09-20}
}

@Manual{	  Himsolt:90,
  author	= {Michael Himsolt},
  title		= {{GraphEd User Manual}},
  year		= {1990},
  school	= {Universit{\"a}t Passau},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Himsolt:91,
  author	= {Michael Himsolt},
  title		= {{GraphEd}: An Interactive Tool for Developing Graph
		  Grammars},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {61--65},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@PhDThesis{	  Himsolt:93,
  author	= {Michael Himsolt},
  title		= {{Konzeption und Implementierung von Grapheditoren}},
  year		= {1993},
  school	= {Universit{\"a}t Passau},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Himsolt:95,
  author	= {Michael Himsolt},
  title		= {Hierarchical Graphs for Graph Grammars},
  year		= {1995},
  added		= {1996-03-13-10-09-20}
}

@Misc{		  Hinrichs:92,
  author	= {Renate Hinrichs},
  title		= {{Konfluente Graphgrammatiken mit Einbettungstiefe $k>1$}},
  year		= {1992},
  note		= {Master thesis, Universit{\"a}t Passau},
  added		= {1996-03-13-10-09-20}
}

@MastersThesis{	  Hoefer:92,
  author	= {H{\"o}fer, F.},
  title		= {{Inkrementelle Attributauswertung in Graphausdr{\"u}cken}},
  year		= {1992},
  address	= {RWTH Aachen},
  type		= {Diplomarbeit},
  school	= {Lehrstuhl f{\"u}r Informatik III},
  added		= {1996-11-28-18-33-07}
}

@InProceedings{	  Hoefting-Wanke-Balmosan.ea:93,
  author	= {Franz Hoefting and Egon Wanke and Aurel Balmo\^{s}an and
		  Curd Bergmann},
  title		= {{\sl 1st Grade} --- {A} System for Implementation, Testing
		  and Animation of Graph Algorithms},
  editor	= {P. Enjalbert and A. Finkel and K. W. Wagner},
  booktitle	= {STACS'93},
  series	= {Lecture Notes in Computer Science},
  volume	= {665},
  pages		= {606--607},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Hoffmann-Main:90,
  author	= {J. Hoffmann and M. G. Main},
  title		= {Results on {NLC} Grammars with One-Letter Terminal
		  Alphabets},
  journal	= {Theoretical Computer Science},
  volume	= {73},
  pages		= {279--294},
  year		= {1990},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Hoffmann-Plump:89,
  author	= {B. Hoffmann and D. Plump},
  title		= {Jungle evaluation for efficient term rewriting},
  editor	= {J. Grabowski et al.},
  booktitle	= {Algebraic and Logic Programming, {V}ol. 49},
  pages		= {191--203},
  year		= {1989},
  publisher	= {Akademie-Verlag},
  address	= {Berlin},
  note		= {{Also in: Lecture Notes in Computer Science 343, 1989}},
  added		= {1996-03-28-11-35-01}
}

@Article{	  Hoffmann-Plump:91,
  author	= {Berthold Hoffmann and Detlef Plump},
  title		= {Implementing Term Rewriting by Jungle Evaluation},
  journal	= {{RAIRO} Theoretical Informatics and Applications},
  volume	= {25(5)},
  pages		= {445--472},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Hoffmann:83,
  author	= {Berthold Hoffmann},
  title		= {Modelling Compiler Generation by Graph Grammars},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {153},
  pages		= {159--171},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Hohenstein-Engels:92,
  author	= {Uwe Hohenstein and Gregor Engels},
  title		= {{SQL/EER} --- Syntax and Semantics of an
		  Entity-Relationship-Based Query Language},
  journal	= {Information Systems},
  volume	= {17},
  pages		= {209--242},
  year		= {1992},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Hopcroft-Tarjan:73,
  author	= {John E. Hopcroft and Robert E. Tarjan},
  title		= {Dividing a Graph into Triconnected Components},
  journal	= {SIAM Journal on Computing},
  volume	= {2(3)},
  pages		= {135--158},
  year		= {1973},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Hotz-Kolla-Molitor:87,
  author	= {G. Hotz and R. Kolla and P. Molitor},
  title		= {On Network Algebras and Recursive Equations},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {250--261},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Hudson:87,
  author	= {S.E. Hudson},
  title		= {Incremental attribute evaluation: an algorithm for lazy
		  evaluation in graphs},
  number	= {87-20},
  year		= {1987},
  institution	= {University of Arizona},
  added		= {1996-08-02-14-49-29}
}

@Book{		  Humphrey:89,
  author	= {Watts S. Humphrey},
  title		= {Managing the Software Process},
  series	= {SEI Series in Software Engineering},
  year		= {1989},
  publisher	= {Addison Wesley},
  address	= {Reading, MA},
  added		= {1996-08-02-14-49-29}
}

@InProceedings{	  JEngelfriet-GRozenberg:97,
  author	= {J.~Engelfriet and G.~Rozenberg},
  title		= {Node Replacement Graph Grammars},
  editor	= {G.Rozenberg},
  booktitle	= {Handbook of Graph Grammars and Computing by Graph
		  Transformation},
  series	= {},
  volume	= {1: Foundations},
  pages		= {},
  year		= {1997},
  publisher	= {World Scientific},
  added		= {1998-01-22-10-35-50}
}

@TechReport{	  JEngelfriet-HVogler:96,
  author	= {J.~Engelfriet and H.~Vogler},
  title		= {The equivalence of bottom-up and top-down tree-to-graph
		  transducers},
  number	= {TUD/FI96/17},
  year		= {1996},
  month		= oct,
  institution	= {Technical University of Dresden},
  address	= {},
  type		= {Technical Report},
  added		= {1998-01-22-10-35-50}
}

@InProceedings{	  JEngelfriet:97,
  author	= {J.~Engelfriet},
  title		= {Context-Free Graph Grammars},
  editor	= {G.~Rozenberg and A.~Salomaa},
  booktitle	= {Handbook of Formal Languages},
  series	= {},
  volume	= {3: Beyond Words},
  pages		= {},
  year		= {1997},
  publisher	= {Springer-Verlag},
  added		= {1998-01-22-10-35-50}
}

@TechReport{	  JHage-THarju:97,
  author	= {J.~Hage and T.~Harju},
  title		= {The size of switching classes with skew gains},
  number	= {97--02},
  year		= {1997},
  institution	= {Leiden University, Department of Computer Science},
  type		= {Tech.Report},
  added		= {1998-01-22-10-35-50},
  url		= {http://www.wi.leidenuniv.nl/TechRep/tr97-02.html}
}

@PhDThesis{	  Jackel:86,
  author	= {M Jackel},
  title		= {Formal Specification of Ada's Concurrent Constructs by
		  Graph Grammars},
  year		= {1986},
  school	= {Osnabr{\"u}ck},
  added		= {1996-03-13-10-09-20}
}

@PhDThesis{	  Jackel:86b,
  author	= {Jackel, M.},
  title		= {{Formale Spezifikation konkurrierender ADA-konstrukte mit
		  Graphgrammatiken}},
  year		= {1986},
  type		= {Dissertation},
  school	= {Universit{\"a}t Osnabr{\"u}ck},
  added		= {1996-11-28-18-33-07}
}

@Book{		  Janning:92,
  author	= {Janning, T.},
  title		= {{Requirements Engineering und Programmieren im
		  Gro{\ss}en}},
  year		= {1992},
  publisher	= {Deutscher Universit{\"a}ts-Verlag, Wiesbaden},
  added		= {1996-11-28-18-33-07}
}

@TechReport{	  Janssens-Kreowski-Rozenberg.ea:82,
  author	= {Dirk Janssens and Hans-J{\"o}rg Kreowski and Grzegorz
		  Rozenberg and Hartmut Ehrig},
  title		= {Concurrency of Node-Label-Controlled Graph
		  Transformations},
  number	= {82-38},
  year		= {1982},
  institution	= {Antwerp},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Janssens-Lens-Rozenberg:93,
  author	= {Dirk Janssens and M. Lens and Grzegorz Rozenberg},
  title		= {Computation Graphs for Actor Grammars},
  journal	= {Journal of Computer and System Sciences},
  volume	= {46},
  pages		= {60--90},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Janssens-Mens:96,
  author	= {Dirk Janssens and T. Mens},
  title		= {Abstract Semantics for {ESM} Systems},
  journal	= {Fundamenta Informaticae},
  volume	= {XXVII},
  year		= {1996},
  note		= {To appear},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Janssens-Rozenberg-Verraedt:82,
  author	= {Dirk Janssens and Grzegorz Rozenberg and R. Verraedt},
  title		= {On Sequential and Parallel Node Rewriting Graph Grammars,
		  Part 1},
  journal	= {Computer Graphics and Image Processing},
  volume	= {18},
  pages		= {279--301},
  year		= {1982},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Janssens-Rozenberg-Verraedt:83,
  author	= {Dirk Janssens and Grzegorz Rozenberg and R. Verraedt},
  title		= {On Sequential and Parallel Node Rewriting Graph Grammars,
		  Part 2},
  journal	= {Computer Graphics and Image Processing},
  volume	= {23},
  pages		= {295--312},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Janssens-Rozenberg-Welzl:86,
  author	= {Dirk Janssens and Grzegorz Rozenberg and Emo Welzl},
  title		= {The Bounded Degree Problem for {NLC} Grammars is
		  Decidable},
  journal	= {Journal of Computer and System Sciences},
  volume	= {33},
  pages		= {415--422},
  year		= {1986},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Janssens-Rozenberg:80,
  author	= {Dirk Janssens and Grzegorz Rozenberg},
  title		= {On the Structure of Node-Label-Controlled Graph
		  Languages},
  journal	= {Information Sciences},
  volume	= {20},
  pages		= {191--216},
  year		= {1980},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Janssens-Rozenberg:80b,
  author	= {Dirk Janssens and Grzegorz Rozenberg},
  title		= {Restrictions, Extensions and Variations of {NLC}
		  Grammars},
  journal	= {Information Sciences},
  volume	= {20},
  pages		= {217--244},
  year		= {1980},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Janssens-Rozenberg:81,
  author	= {Dirk Janssens and Grzegorz Rozenberg},
  title		= {A Characterization of Context-Free String Languages by
		  Directed Node Label Controlled Graph Grammars},
  journal	= {Acta Informatica},
  volume	= {16},
  pages		= {63--85},
  year		= {1981},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Janssens-Rozenberg:81b,
  author	= {Dirk Janssens and Grzegorz Rozenberg},
  title		= {Decision Problems for Node Label Controlled Graph
		  Grammars},
  journal	= {Journal of Computer and System Sciences},
  volume	= {22},
  pages		= {144--177},
  year		= {1981},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Janssens-Rozenberg:81c,
  author	= {Dirk Janssens and Grzegorz Rozenberg},
  title		= {Decision Problems for Node Label Controlled Graph
		  Grammars},
  series	= {Lecture Notes in Computer Science},
  volume	= {22},
  pages		= {144--177},
  year		= {1981},
  publisher	= {Springer},
  added		= {1996-03-28-11-35-01}
}

@Article{	  Janssens-Rozenberg:82,
  author	= {Dirk Janssens and Grzegorz Rozenberg},
  title		= {Graph Grammars with Neighbourhood-Controlled Embedding},
  journal	= {Theoretical Computer Science},
  volume	= {21},
  pages		= {55--74},
  year		= {1982},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Janssens-Rozenberg:83,
  author	= {Dirk Janssens and Grzegorz Rozenberg},
  title		= {A Survey of {NLC} Grammars},
  editor	= {G. Ausiello and M. Protasi},
  booktitle	= {CAAP '83},
  series	= {Lecture Notes in Computer Science},
  volume	= {159},
  pages		= {114--128},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Janssens-Rozenberg:83b,
  author	= {Dirk Janssens and Grzegorz Rozenberg},
  title		= {Graph Grammars with Node-Label Controlled Rewriting and
		  Embedding},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {153},
  pages		= {186--205},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Janssens-Rozenberg:83c,
  author	= {Dirk Janssens and Grzegorz Rozenberg},
  title		= {Hypergraph Systems Generating Graph Languages},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {153},
  pages		= {172--185},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Janssens-Rozenberg:86,
  author	= {Dirk Janssens and Grzegorz Rozenberg},
  title		= {Neighbourhood-Uniform {NLC} Grammars},
  journal	= {Computer Vision, Graphics, and Image Processing},
  volume	= {35},
  pages		= {131--151},
  year		= {1986},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Janssens-Rozenberg:87,
  author	= {Dirk Janssens and Grzegorz Rozenberg},
  title		= {Basic Notions of Actor Grammars},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {280--298},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Janssens-Rozenberg:89,
  author	= {Dirk Janssens and Grzegorz Rozenberg},
  title		= {Actor Grammars},
  journal	= {Mathematical Systems Theory},
  volume	= {22},
  pages		= {75--107},
  year		= {1989},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Janssens-Rozenberg:91,
  author	= {Dirk Janssens and Grzegorz Rozenberg},
  title		= {Structured Transformations and Computation Graphs for
		  Actor Grammars},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {446--460},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Janssens-Verlinden:97,
  author	= {D. Janssens and N. Verlinden},
  title		= {Reasoning on Graph-Rewriting Processes},
  number	= {97--07},
  year		= {1997},
  institution	= {University of Antwerp - UIA, dept. of Math. and Comp.
		  Sci.},
  added		= {1998-01-22-10-35-50}
}

@PhDThesis{	  Janssens:83,
  author	= {Dirk Janssens},
  title		= {Node Label Controlled Graph Grammars},
  year		= {1983},
  school	= {Antwerp},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Janssens:93,
  author	= {Dirk Janssens},
  title		= {Equivalence of Computations in Actor Grammars},
  journal	= {Theoretical Computer Science},
  volume	= {109},
  pages		= {145--180},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Janssens:94,
  author	= {Dirk Janssens},
  title		= {{EMS} Systems and the Composition of Their Computations},
  editor	= {Hans J{\"u}rgen Schneider and Hartmut Ehrig},
  booktitle	= {Graph Transformations in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {776},
  pages		= {203--217},
  year		= {1994},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Janssens:95,
  author	= {Dirk Janssens},
  title		= {The Decomposition of {EMS} Computations},
  year		= {1995},
  note		= {Submitted for publication},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Janssens:96,
  author	= {Janssens, Dirk},
  title		= {The Decomposition of {ESM} Computations},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {271--287},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@InProceedings{	  Jeltsch-Kreowski:91,
  author	= {Eric Jeltsch and Hans-J{\"o}rg Kreowski},
  title		= {Grammatical Inference Based on Hyperedge Replacement},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {461--474},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Jones-DSouza:92,
  author	= {C. V. Jones and K. D'Souza},
  title		= {Graph-Grammars for Minimum Cost Network Flow Modeling},
  year		= {1992},
  institution	= {Faculty of Business Administration, Simon Fraser
		  University},
  address	= {Burnaby (BC), V5A 1S6 CANADA},
  added		= {1996-06-13-16-37-07}
}

@TechReport{	  Jones-Krishnan:92,
  author	= {C. V. Jones and R. Krishnan},
  title		= {A Visual, Syntax-Directed Environment for Automated Model
		  Development},
  year		= {1992},
  institution	= {Faculty of Business Administration, Simon Fraser
		  University},
  address	= {Burnaby (BC), V5A 1S6 CANADA},
  added		= {1996-06-13-16-37-07}
}

@InProceedings{	  Jones:90,
  author	= {C. V. Jones},
  title		= {An Example Based Introduction to Graph-Based Modeling},
  booktitle	= {Proceedings of the Twenty-Third Annual Hawaii
		  International Conference on the System Sciences},
  pages		= {433--442},
  year		= {1990},
  publisher	= {IEEE Computer Society Press},
  address	= {Los Alamitos (CA)},
  added		= {1996-06-13-16-37-07}
}

@Article{	  Jones:90b,
  author	= {C. V. Jones},
  title		= {An Introduction to Graph-Based Modeling Systems, Part~{I}:
		  Overview},
  journal	= {ORSA Journal on Computing},
  volume	= {2},
  number	= {2},
  pages		= {136--151},
  year		= {1990},
  added		= {1996-06-13-16-37-07}
}

@Article{	  Jones:91,
  author	= {C. V. Jones},
  title		= {An Introduction to Graph-Based Modeling Systems,
		  Part~{II}: Graph-Grammars and the Implementation},
  journal	= {ORSA Journal on Computing},
  volume	= {3},
  number	= {3},
  pages		= {180--206},
  year		= {1991},
  added		= {1996-06-13-16-37-07}
}

@Article{	  Jones:92,
  author	= {C. V. Jones},
  title		= {Attributed Graphs, Graph-Grammars, and Structured
		  Modeling},
  journal	= {Annals of OR},
  volume	= {38},
  pages		= {281--324},
  year		= {1992},
  added		= {1996-06-13-16-37-07}
}

@Article{	  Jones:93,
  author	= {C. V. Jones},
  title		= {An Integrated Modeling Environment Based on Attributed
		  Graphs and Graph-Grammars},
  journal	= {Decision Support Systems},
  volume	= {10},
  pages		= {255--275},
  year		= {1993},
  added		= {1996-06-13-16-37-07}
}

@Article{	  Jones:95,
  author	= {C. V. Jones},
  title		= {Developments in Graph-based Modeling for Decision
		  Support},
  journal	= {Decision Support Systems},
  volume	= {13},
  number	= {1},
  pages		= {61--74},
  year		= {1995},
  added		= {1996-06-13-16-37-07}
}

@InProceedings{	  Kajitani-Cho-Sarrafzadeh:95,
  author	= {Yoji Kajitani and Jun Dong Cho and Majid Sarrafzadeh},
  title		= {New Approximation Results on Graph Matching and Related
		  Problems},
  editor	= {W. {Mayr, Ernst} and Gunter Schmidt and Gottfried
		  Tinhofer},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {903},
  pages		= {343--358},
  year		= {1995},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Kaul:83,
  author	= {M. Kaul},
  title		= {Parsing of Graphs in Linear Time},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {153},
  pages		= {206--218},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@PhDThesis{	  Kaul:85,
  author	= {Kaul, M.},
  title		= {{Syntaxanalyse von Graphen durch
		  Pr{\"a}zedenzgraphgrammatiken}},
  year		= {1985},
  type		= {Dissertation},
  school	= {Universit{\"a}t Osnabr{\"u}ck},
  added		= {1996-11-28-18-33-07}
}

@PhDThesis{	  Kaul:86,
  author	= {M. Kaul},
  title		= {Syntaxanalyse von Graphen bei
		  Pr{\"a}zedenz-Graph-Grammatiken},
  year		= {1986},
  school	= {Passau},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Kaul:87,
  author	= {M. Kaul},
  title		= {Practical Applications of Precedence Graph Grammars},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {326--342},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Kennaway-Klop-Sleep.ea:91,
  author	= {Richard Kennaway and Jan Willem Klop and Ronan Sleep and
		  Jan {de Vries}},
  title		= {Transfinite Reductions in Orthogonal Term Rewriting
		  Systems (extended Abstract)},
  editor	= {Ronald V. Book},
  booktitle	= {Rewriting techniquers and Applications},
  series	= {Lecture Notes in Computer Science},
  volume	= {488},
  pages		= {1--12},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Kennaway:87,
  author	= {Richard Kennaway},
  title		= {On ``{O}n Graph Rewritings''},
  journal	= {Theoretical Computer Science},
  volume	= {52},
  pages		= {37--58},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Kennaway:90,
  author	= {Richard Kennaway},
  title		= {Implementing Term Rewrite Languages in {DACTL}},
  journal	= {Theoretical Computer Science},
  volume	= {72},
  pages		= {225--249},
  year		= {1990},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Kennaway:91,
  author	= {Richard Kennaway},
  title		= {Graph Rewriting in Some Categories of Partial Morphisms},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {505--519},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Kiesel-Schuerr-Westfechtel:92,
  author	= {N. Kiesel and A. Schuerr and B. Westfechtel},
  title		= {Design and Evaluation of {GRAS}, a Graph-Oriented Database
		  System for Engineering Applications},
  number	= {92-44},
  year		= {1992},
  institution	= {Lehrstuhl fur Informatik III, Technical University of
		  Aachen, Germany},
  added		= {1996-04-16-07-34-15}
}

@Article{	  Kiesel-Schuerr-Westfechtel:95,
  author	= {Norbert Kiesel and Andy Sch{\"u}rr and Bernhard
		  Westfechtel},
  title		= {{GRAS}, a Graph-Oriented (Software) Engineering Database
		  System},
  journal	= {Information Sciences},
  volume	= {20},
  number	= {1},
  pages		= {21--51},
  year		= {1995},
  publisher	= {Pergamon Press},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Kim-Jeong:95,
  author	= {Changwook Kim and Tae Eui Jeong},
  title		= {{HRNCE} Grammars --- {A} Hypergraph Generating System with
		  an {eNCE} Way of Rewriting},
  year		= {1995},
  note		= {Submitted for publication},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Kim-Jeong:96,
  author	= {Kim, Changwook and Jeong, Tae Eui},
  title		= {{HRNCE} Grammars---{A} Hypergraph Generating System with
		  an {eNCE} way of Rewriting},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {383--396},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@Article{	  Kim-Lee:95,
  author	= {Changwook Kim and Dong Hoon Lee},
  title		= {Node Replacement Graph Languages Squeezed with Chains,
		  Trees, and Forests},
  journal	= {Information and Computation},
  volume	= {117},
  pages		= {63--77},
  year		= {1995},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Kleene:56,
  author	= {S. C. Kleene},
  title		= {Representation of Events in Nerve Nets and Finite
		  Automata},
  editor	= {C. Shannon and J. McCarthy},
  booktitle	= {Automata Studies, Annals of Math. Studies 34},
  pages		= {3--40},
  year		= {1956},
  publisher	= {Princeton},
  address	= {New Jersey},
  added		= {1996-03-13-10-09-20}
}

@MastersThesis{	  Klein:93,
  author	= {Klein, P.},
  title		= {{Die Graphcodemaschine PROGRES}},
  year		= {1993},
  address	= {RWTH Aachen},
  type		= {Diplomarbeit},
  school	= {Lehrstuhl f{\"u}r Informatik III},
  added		= {1996-11-28-18-33-07}
}

@InProceedings{	  Klempien-Hinrichs:96,
  ATTENTION	= {newer record added: Jul 30, 1996},
  author	= {Klempien-Hinrichs, Renate},
  title		= {Node Replacement in Hypergraphs: Simulation of Hyperedge
		  Replacement, and Decidability of Confluence},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  year		= {1996},
  note		= {To appear},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Klempien-Hinrichs:96b,
  author	= {Klempien-Hinrichs, Renate},
  title		= {Node Replacement in Hypergraphs: Simulation of Hyperedge
		  Replacement, and Decidability of Confluence},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {397--411},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-07-30-13-31-20}
}

@TechReport{	  Klempien-Hinrichs:97,
  author	= {R. Klempien-Hinrichs},
  title		= {Net Refinement by pullback rewriting},
  number	= {},
  year		= {1997},
  institution	= {LaBRI, University of Bordeaux},
  added		= {1998-01-22-10-35-50}
}

@InProceedings{	  Klempien-Hinrichs:98,
  author	= {{Klempien-Hinrichs}, Renate},
  title		= {Net Refinement by Pullback Rewriting},
  editor	= {M. Nivat},
  booktitle	= {Proc. Foundations of Software Science and Computation
		  Structures},
  series	= {Lecture Notes in Computer Science},
  volume	= {1378},
  pages		= {189--202},
  year		= {1998},
  publisher	= {Springer},
  added		= {1998-04-15-14-04-00}
}

@TechReport{	  Koch:97,
  author	= {Koch, M.},
  title		= {Bedingte verteilte {G}raphtransformation und ihre
		  {A}nwendung auf verteilte {T}ransaktionen},
  number	= {97-11},
  year		= {1997},
  institution	= {Technical University of Berlin},
  added		= {1998-01-22-10-35-50},
  creatorofitem	= {gabi-970217}
}

@PhDThesis{	  Kohring:96,
  author	= {Kohring, C.},
  title		= {{Ausf{\"u}hrung von Anforderungsdefinitionen zum Rapid
		  Prototyping}},
  year		= {1996},
  address	= {RWTH Aachen},
  type		= {Dissertation},
  school	= {Lehrstuhl f{\"u}r Informatik III},
  added		= {1996-11-28-18-33-07}
}

@InProceedings{	  Korff-Ribeiro:96,
  author	= {Korff, Martin and Ribeiro, Leila},
  title		= {Formal Relationship Between Graph Grammars and Petri
		  Nets},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {288--303},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@InProceedings{	  Korff:91,
  author	= {Martin Korff},
  title		= {Application of Graph Grammars to Rule-Based Systems},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {505--519},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Korff:92,
  author	= {M. Korff},
  title		= {Algebraic transformation of equationally defined graph
		  structures},
  number	= {92/32},
  year		= {1992},
  publisher	= {Technische Universit{\"a}t Berlin},
  added		= {1996-08-02-14-49-29}
}

@MastersThesis{	  Kossisng:92,
  author	= {Kossisng, P.},
  title		= {{Modellierung abstrakter Syntaxgraphen f{\"u}r EBNF}},
  year		= {1992},
  address	= {RWTH Aachen},
  type		= {Diplomarbeit},
  school	= {Lehrstuhl f{\"u}r Informatik III},
  added		= {1996-11-28-18-33-07}
}

@Article{	  Kreowski-Kuske-Schuerr:97,
  author	= {Kreowski, Hans-J\"org and Kuske, Sabine and Sch\"urr, Andy},
  title		= {Nested Graph Transformation Units},
  journal	= {International Journal of Software Engineering and
		  Knowledge Engineering},
  volume	= {7},
  pages		= {479--502},
  year		= {1997},
  added		= {1997-09-01-16-46-57}
}

@InProceedings{	  Kreowski-Kuske:96,
  author	= {Hans-J{\"o}rg Kreowski and Sabine Kuske},
  title		= {On the Interleaving Semantics of Transformation
		  Units---{A} step into {GRACE}},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {89--106},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-07-08-16-34-22}
}

@Unpublished{	  Kreowski-Rozenberg:80,
  author	= {Hans-J{\"o}rg Kreowski and G. Rozenberg},
  title		= {Finite String Automata Recognizing Graph Languages},
  year		= {1980},
  note		= {Unpublished manuscript},
  added		= {1996-03-28-11-35-01}
}

@InProceedings{	  Kreowski-Rozenberg:81,
  author	= {Hans-J{\"o}rg Kreowski and Grzegorz Rozenberg},
  title		= {On the Constructive Description of Graph Languages
		  Accepted by Finite Automata},
  editor	= {J. Gruska and M. Chytil},
  booktitle	= {Mathematical Foundations of Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {118},
  pages		= {398--409},
  year		= {1981},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Kreowski-Rozenberg:84,
  author	= {Hans-J{\"o}rg Kreowski and Grzegorz Rozenberg},
  title		= {Note on Node-Rewriting Graph Grammars},
  journal	= {Information Processing Letters},
  volume	= {18},
  pages		= {21--24},
  year		= {1984},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Kreowski-Rozenberg:88,
  author	= {H.-J. Kreowski and G. Rozenberg},
  title		= {On structured graph grammars (Parts {I}, {II})},
  journal	= {Technical report},
  number	= {3/88},
  year		= {1988},
  publisher	= {Universit{\"a}t Bremen},
  added		= {1996-08-02-14-49-29}
}

@Article{	  Kreowski-Rozenberg:90,
  author	= {Hans-J{\"o}rg Kreowski and Grzegorz Rozenberg},
  title		= {On Structured Graph Grammars, Parts {I} and {II}},
  journal	= {Information Sciences},
  volume	= {52},
  pages		= {185--210 and 221--246},
  year		= {1990},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Kreowski-Wilharm:87,
  author	= {Hans-J{\"o}rg Kreowski and Anne Wilharm},
  title		= {Is Parallelism Already Concurrency? {P}art 2: Non
		  Sequential Processes in Graph Grammars},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {361--377},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@PhDThesis{	  Kreowski:77,
  author	= {Hans-J{\"o}rg Kreowski},
  title		= {Manipulationen von Graphmanipulationen},
  year		= {1977},
  school	= {Technische Universit{\"a}t Berlin},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Kreowski:77b,
  author	= {Hans-J{\"o}rg Kreowski},
  title		= {Transformations of Derivation Sequences in Graph
		  Grammars},
  editor	= {M. Karpi\'nski},
  booktitle	= {Fundamentals of Computation Theory},
  series	= {Lecture Notes in Computer Science},
  volume	= {56},
  pages		= {275--286},
  year		= {1977},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Kreowski:78,
  author	= {Hans-J{\"o}rg Kreowski},
  title		= {{Anwendungen der Algebraischen Theorie von
		  Graph-Grammatiken auf Konsistenz und Synchronisation in
		  Datenbanksystemen}},
  number	= {78-15},
  year		= {1978},
  institution	= {Berlin},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Kreowski:79,
  author	= {Hans-J{\"o}rg Kreowski},
  title		= {A Pumping Lemma for Context-Free Graph Languages},
  editor	= {V. Claus and H. Ehrig and G. Rozenberg},
  booktitle	= {Graph-Grammars and Their Application to Computer Science
		  and Biology},
  series	= {Lecture Notes in Computer Science},
  volume	= {73},
  pages		= {270--283},
  year		= {1979},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Kreowski:81,
  author	= {H.-J. Kreowski},
  title		= {A comparison between {P}etri-nets and graph grammars},
  editor	= {H. Noltemeier},
  booktitle	= {Graphtheoric Concepts in Computer Science, Proceedings of
		  the International Workshop WG'80},
  series	= {Lecture Notes in Computer Science},
  number	= {100},
  pages		= {306--317},
  year		= {1981},
  publisher	= {Springer-Verlag},
  added		= {1996-04-16-07-34-15}
}

@InProceedings{	  Kreowski:83,
  author	= {Hans-J{\"o}rg Kreowski},
  title		= {Graph Grammar Derivation Processes},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  pages		= {136--150},
  year		= {1983},
  publisher	= {Trauner Verlag},
  address	= {Linz},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Kreowski:86,
  author	= {Hans-J{\"o}rg Kreowski},
  title		= {Rule Trees Represent Derivations in Edge Replacement
		  Systems},
  editor	= {G. Rozenberg and A. Salomaa},
  booktitle	= {The Book of L},
  pages		= {217--232},
  year		= {1986},
  publisher	= {Springer-Verlag},
  address	= {Berlin},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Kreowski:87,
  author	= {Hans-J{\"o}rg Kreowski},
  title		= {Is Parallelism Already Concurrency? {P}art 1: Derivations
		  in Graph Grammars},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {343--360},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Kreowski:87b,
  author	= {Hans-J{\"o}rg Kreowski},
  title		= {Rule Trees Can Help to Escape Hard Graph Problems},
  year		= {1987},
  institution	= {Bremen},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Kreowski:92,
  author	= {Hans-J{\"o}rg Kreowski},
  title		= {Parallel Hyperedge Replacement},
  editor	= {G. Rozenberg and A. Salomaa},
  booktitle	= {Lindenmayer Systems},
  pages		= {271--282},
  year		= {1992},
  publisher	= {Springer-Verlag},
  address	= {Berlin},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Kreowski:93,
  author	= {Hans-J{\"o}rg Kreowski},
  title		= {Five Facets of Hyperedge Replacement Beyond
		  Context-Freeness},
  editor	= {Z. \'Esik},
  booktitle	= {Proc. Fundamentals of Computation Theory 93},
  series	= {Lecture Notes in Computer Science},
  volume	= {710},
  pages		= {69--86},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Kreowski:93b,
  author	= {Hans-J{\"o}rg Kreowski},
  title		= {Translations into the Graph Grammar Machine},
  editor	= {Ronan Sleep and Rinus Plasmeijer and Marko {van Eekelen}},
  booktitle	= {Term Graph Rewriting: Theory and Practice},
  chapter	= {13},
  pages		= {171--183},
  year		= {1993},
  publisher	= {John Wiley},
  address	= {New York},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Kreowski:94,
  author	= {Hans-J{\"o}rg Kreowski},
  title		= {An Axiomatic Approach to Canonical Derivations},
  editor	= {B. Pehrson and I. Simon},
  booktitle	= {13th World Computer Congress 94, Volume 1},
  pages		= {348--353},
  year		= {1994},
  publisher	= {Elsevier Science (North-Holland)},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Kreowski:95,
  author	= {Hans-J{\"o}rg Kreowski},
  title		= {A Case Study in {GRACE}: Shortest Paths},
  year		= {1995},
  institution	= {Bremen},
  type		= {Technical Report},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Kreowski:95b,
  author	= {Hans-J{\"o}rg Kreowski},
  title		= {Graph Grammars for Software Specification and Programming:
		  An Eulogy in Praise of {GRACE}},
  editor	= {G. Valiente and F. Rossell\'o},
  booktitle	= {Proc. Colloquium on Graph Transformation and its
		  Application in Computer Science},
  journal	= {Technical Report, Palma de Mallorca},
  pages		= {63--70},
  year		= {1995},
  added		= {1996-03-13-10-09-20}
}

@MastersThesis{	  Kreten:95,
  author	= {Kreten, H.},
  title		= {{Graphenalgorithmen in PROGRES}},
  year		= {1995},
  address	= {RWTH Aachen},
  type		= {Diplomarbeit},
  school	= {Lehrstuhl f{\"u}r Informatik III},
  added		= {1996-11-28-18-33-07},
  subtitle	= {{Auswahl, Spezifikation und effiziente Realisierung}}
}

@Article{	  Kruskal:60,
  author	= {J. B. Kruskal},
  title		= {Well-Quasi-Ordering, the Tree-Theorem, and {V}azsonyi's
		  Conjecture},
  journal	= {Proceedings of the American Mathematical Society},
  year		= {1960},
  added		= {1996-03-28-11-35-01}
}

@InProceedings{	  Kuske:93,
  author	= {Sabine Kuske},
  title		= {Maximum Path Length Pumping Lemma for Edge Replacement
		  Languages},
  editor	= {Z. \'Esik},
  booktitle	= {Proc.\ Fundamentals of Computation Theory},
  series	= {Lecture Notes in Computer Science},
  volume	= {710},
  pages		= {342--351},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Kuske:95,
  author	= {Sabine Kuske},
  title		= {Semantic Aspects of the Graph and Rule Centered Language
		  {GRACE}},
  editor	= {F. Rossell{\'o} Llompart and G. Valiente Feruglio},
  booktitle	= {Proc. Colloquium on Graph Transformation and its
		  Application in Computer Science},
  series	= {Technical Report, Palma de Mallorca},
  pages		= {63--70},
  year		= {1995},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Kuske:95b,
  author	= {Sabine Kuske},
  title		= {Implementing $\beta$-reduction by hypergraph rewriting},
  editor	= {A. Corradini and U. Montanari},
  booktitle	= {Proc.\ Joint {COMPUGRAPH/SEMAGRAPH} Workshop on Graph
		  Rewriting and Computation ({SEGRAGRA '95})},
  journal	= {Electronic Notes in Theoretical Computer Science},
  volume	= {2},
  pages		= {159--166},
  year		= {1995},
  publisher	= {Elsevier Science},
  added		= {1998-02-11-16-07-04}
}

@Article{	  Lange-Welzl:87,
  author	= {Klaus-J{\"o}rn Lange and Emo Welzl},
  title		= {String Grammars with Disconnecting or a Basic Root of the
		  Difficulty in Graph Grammar Parsing},
  journal	= {Discrete Applied Mathematics},
  volume	= {16},
  pages		= {17--30},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Lautemann:88,
  author	= {Clemens Lautemann},
  title		= {Decomposition Trees: Structured Graph Representation and
		  Efficient Algorithms},
  editor	= {M. Dauchet and M. Nivat},
  booktitle	= {CAAP'88},
  series	= {Lecture Notes in Computer Science},
  volume	= {299},
  pages		= {28--39},
  year		= {1988},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Lautemann:88b,
  author	= {Clemens Lautemann},
  title		= {Efficient Algorithms on Context-Free Graph Languages},
  editor	= {T. Lepist{\"o} and A. Salomaa},
  booktitle	= {Automata, Languages and Programming},
  series	= {Lecture Notes in Computer Science},
  volume	= {317},
  pages		= {362--378},
  year		= {1988},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Lautemann:89,
  author	= {Clemens Lautemann},
  title		= {The Complexity of Graph Languages Generated by Hyperedge
		  Replacement},
  number	= {4/89},
  year		= {1989},
  institution	= {Univ. Bremen},
  type		= {Report},
  added		= {1996-03-28-11-35-01}
}

@Article{	  Lautemann:90,
  author	= {Clemens Lautemann},
  title		= {The Complexity of Graph Languages Generated by Hyperedge
		  Replacement},
  journal	= {Acta Informatica},
  volume	= {27},
  pages		= {399--421},
  year		= {1990},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Lautemann:90b,
  author	= {Clemens Lautemann},
  title		= {Tree automata, Tree Decomposition and hyperedge
		  replacement},
  number	= {2/90},
  year		= {1990},
  institution	= {Univ. Mainz},
  type		= {{Informatik-Bericht}},
  added		= {1996-03-28-11-35-01}
}

@InProceedings{	  Lautemann:91,
  author	= {Clemens Lautemann},
  title		= {Tree Automata, Tree Decomposition, and Hyperedge
		  Replacement},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Proc. Fourth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {520--537},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Leeuwen:90,
  author	= {Jan van Leeuwen},
  title		= {Graph Algorithms},
  editor	= {J. van Leeuwen},
  booktitle	= {Handbook of Theoretical Computer Science},
  volume	= {A},
  pages		= {193--242},
  year		= {1990},
  publisher	= {Elsevier},
  address	= {Amsterdam},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Lengauer-Wagner:87,
  author	= {Thomas Lengauer and K. W. Wagner},
  title		= {The Correlation Between the Complexities of the
		  Non-Hierarchical and Hierarchical Version of Graph
		  Problems},
  editor	= {F. Brandenburg and G. {Vidal-Naquet} and M. Wirsing},
  booktitle	= {STACS 87},
  series	= {Lecture Notes in Computer Science},
  volume	= {247},
  pages		= {100--113},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Lengauer-Wanke:88,
  author	= {Thomas Lengauer and Egon Wanke},
  title		= {Efficient Analysis of Graph Properties on Context-Free
		  Graph Languages},
  editor	= {T. Lepist{\"o} and A. Salomaa},
  booktitle	= {Automata, Languages and Programming},
  series	= {Lecture Notes in Computer Science},
  volume	= {317},
  pages		= {379--393},
  year		= {1988},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Lengauer-Wanke:88b,
  author	= {Thomas Lengauer and Egon Wanke},
  title		= {Efficient Solution of Connectivity Problems on
		  Hierarchically Defined Graphs},
  journal	= {SIAM Journal on Computing},
  volume	= {17},
  pages		= {1063--1080},
  year		= {1988},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Lengauer-Wanke:88c,
  author	= {T. Lengauer and E. Wanke},
  title		= {Decision Problems on Cellular Graph Grammars},
  series	= {Lecture Notes in Computer Science},
  volume	= {317},
  pages		= {379--393},
  year		= {1988},
  publisher	= {Springer},
  added		= {1996-03-28-11-35-01}
}

@Article{	  Lengauer-Wanke:88d,
  author	= {T. Lengauer and E. Wanke},
  title		= {Efficient Analysis of Graph Properties on Context-Free
		  Graph Languages},
  editor	= {T. Leipist{\"o} and A. Salomaa},
  booktitle	= {Proc. {ICALP 88}},
  series	= {Lecture Notes in Computer Science},
  volume	= {317},
  pages		= {379--393},
  year		= {1988},
  publisher	= {Springer},
  added		= {1996-03-28-11-35-01}
}

@Article{	  Lengauer-Wanke:93,
  author	= {Thomas Lengauer and Egon Wanke},
  title		= {Efficient Decision Procedures for Graph Properties on
		  Context-Free Graph Languages},
  journal	= {Journal of the Association for Computing Machinery},
  volume	= {40},
  pages		= {368--393},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Lengauer:85,
  author	= {Thomas Lengauer},
  title		= {Efficient Solution of Biconnectivity Problems on
		  Hierarchically Defined Graphs},
  editor	= {H. Noltemeier},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  pages		= {201--215},
  year		= {1985},
  publisher	= {Trauner Verlag},
  address	= {Linz},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Lengauer:86,
  author	= {Thomas Lengauer},
  title		= {Hierarchical Planarity Testing Algorithms},
  editor	= {L. Kott},
  booktitle	= {Automata, Languages and Programming},
  series	= {Lecture Notes in Computer Science},
  volume	= {226},
  pages		= {215--225},
  year		= {1986},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Lengauer:87,
  author	= {Thomas Lengauer},
  title		= {Efficient Algorithms for Finding Minimum Spanning Forests
		  of Hierarchically Defined Graphs},
  journal	= {Journal of Algorithms},
  volume	= {8},
  pages		= {260--284},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Lewerentz-Nagl-Westfechtel:88,
  author	= {C. Lewerentz and M. Nagl and B. Westfechtel},
  title		= {On integration mechanisms within a graphbased software
		  development environment},
  booktitle	= {Proc {WG87} workshop on graphtheoretic concepts in comp.\
		  sci.},
  series	= {Lecture Notes in Computer Science},
  number	= {314},
  pages		= {219--229},
  year		= {1988},
  publisher	= {Springer-Verlag},
  added		= {1996-08-02-14-49-29}
}

@Article{	  Lewerentz-Nagl:84,
  author	= {C. Lewerentz and M. Nagl},
  title		= {A formal specification language for software systems
		  defined by graph grammars},
  editor	= {Pape},
  booktitle	= {Proc.of {WG84} workshop on graphtheoretic concepts in
		  comp.\ sci.},
  pages		= {224--241},
  year		= {1984},
  publisher	= {Trauner-Verlag},
  address	= {Linz},
  added		= {1996-08-02-14-49-29}
}

@Book{		  Lewerentz:88,
  author	= {Claus Lewerentz},
  title		= {Interaktives Entwerfen gro\ss er Programmsysteme: Konzepte
		  und Werkzeuge},
  series	= {Informatik-Fachberichte},
  volume	= {194},
  year		= {1988},
  publisher	= {Springer-Verlag},
  address	= {Berlin},
  note		= {Doctoral dissertation},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Lichtblau:85,
  author	= {Ulrike Lichtblau},
  title		= {Decompilation of Control Structures by Means of Graph
		  Transformations},
  editor	= {H. Ehrig and C. Floyd and M. Nivat and J. Thatcher},
  booktitle	= {Mathematical Foundations of Software Development},
  series	= {Lecture Notes in Computer Science},
  volume	= {185},
  pages		= {284--297},
  year		= {1985},
  added		= {1996-03-13-10-09-20}
}

@PhDThesis{	  Lichtblau:90,
  author	= {Ulrike Lichtblau},
  title		= {Flu\ss graphgrammatiken},
  year		= {1990},
  school	= {Oldenburg},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Lichtblau:91,
  author	= {Ulrike Lichtblau},
  title		= {Recognizing Rooted Context-Free Flowgraph Languages in
		  Polynomial Time},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {538--548},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Lindenmayer-CulikII:79,
  author	= {Aristid Lindenmayer and Karel {Culik II}},
  title		= {Growing Cellular Systems: Generation of Graphs by Parallel
		  Rewriting},
  journal	= {Int. J. General Systems},
  volume	= {5},
  pages		= {45--55},
  year		= {1979},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Lindenmayer-Rozenberg:79,
  author	= {Aristid Lindenmayer and G. Rozenberg},
  title		= {Parallel Generation of Maps: Developmental Systems of Cell
		  Layers},
  editor	= {V. Claus and H. Ehrig and G. Rozenberg},
  booktitle	= {Graph-Grammars and Their Application to Computer Science
		  and Biology},
  series	= {Lecture Notes in Computer Science},
  volume	= {73},
  pages		= {301--316},
  year		= {1979},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Lindenmayer:87,
  author	= {A. Lindenmayer},
  title		= {An Introduction to Parallel Map Generating Systems},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {27--40},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Lingas-Syslo:88,
  author	= {A. Lingas and Maciej M. Syslo},
  title		= {A Polynomial-Time Algorithm for Subgraph Isomorphism of
		  Two-Connected Series-Parallel Graphs},
  editor	= {T. Lepist{\"o} and A. Salomaa},
  booktitle	= {Automata, Languages and Programming},
  series	= {Lecture Notes in Computer Science},
  volume	= {317},
  pages		= {394--409},
  year		= {1988},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Litovsky-Metivier-Sopena:95,
  author	= {Igor Litovsky and Yves M\'etivier and Eric Sopena},
  title		= {Different Local Controls for Graph Relabeling Systems},
  journal	= {Mathematical Systems Theory},
  volume	= {28},
  pages		= {41--65},
  year		= {1995},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Litovsky-Metivier-Zielonka:93,
  author	= {Igor Litovsky and Yves M\'etivier and W. Zielonka},
  title		= {The Power and Limitations of Local Computations on Graphs
		  and Networks},
  editor	= {E. W. Mayr},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {657},
  pages		= {333--345},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Litovsky-Metivier:91,
  author	= {Igor Litovsky and Yves M\'etivier},
  title		= {Computing with Graph Relabelling Systems with Priorities},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {549--563},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Litovsky-Metivier:92,
  author	= {Igor Litovsky and Yves M\'etivier},
  title		= {Computing Trees with Graph Rewriting Systems with
		  Priorities},
  editor	= {M. Nivat and A. Podelski},
  booktitle	= {Tree Automata and Languages},
  pages		= {115--139},
  year		= {1992},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Litovsky-Metivier:93,
  author	= {Igor Litovsky and Yves M\'etivier},
  title		= {Computing with Graph Rewriting Systems with Priorities},
  journal	= {Theoretical Computer Science},
  volume	= {115},
  pages		= {191--224},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Loewe-Beyer:93,
  author	= {Michael L{\"o}we and Martin Beyer},
  title		= {{AGG} --- An Implementation of Algebraic Graph Rewriting},
  booktitle	= {Rewriting Techniques and Applications},
  series	= {Lecture Notes in Computer Science},
  volume	= {690},
  pages		= {451--456},
  year		= {1993},
  publisher	= {Springer-Verlag},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Loewe-Ehrig:91,
  author	= {Michael L{\"o}we and Hartmut Ehrig},
  title		= {Algebraic Approach to Graph Transformation based on Single
		  Pushout Derivations},
  editor	= {R. H. M{\"o}hring},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {484},
  pages		= {338--353},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Loewe-Korff-Wagner:93,
  author	= {Michael L{\"o}we and Martin Korff and Annika Wagner},
  title		= {An Algebraic Framework for the Transformation of
		  Attributed Graphs},
  editor	= {Ronan Sleep and Rinus Plasmeijer and Marko {van Eekelen}},
  booktitle	= {Term Graph Rewriting: Theory and Practice},
  pages		= {185--199},
  year		= {1993},
  publisher	= {John Wiley},
  address	= {New York},
  added		= {1996-03-13-10-09-20}
}

@PhDThesis{	  Loewe:90,
  author	= {Michael L{\"o}we},
  title		= {Extended Algebraic Graph Transformation},
  year		= {1990},
  school	= {Berlin},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Loewe:90b,
  author	= {Michael L{\"o}we},
  title		= {Implementing Algebraic Specifications by Graph
		  Transformation Systems},
  journal	= {Journal of Information Processing and Cybernetics EIK},
  volume	= {26},
  number	= {11/12},
  pages		= {615--641},
  year		= {1990},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Loewe:90c,
  author	= {M. L{\"o}we},
  title		= {Algebraic approach to graph transformation, based on
		  single pushout derivations},
  number	= {90/5},
  year		= {1990},
  institution	= {Technische Universit{\"a}t Berlin},
  note		= {Doctoral dissertation},
  added		= {1996-08-02-14-49-29}
}

@Article{	  Loewe:93,
  author	= {Michael L{\"o}we},
  title		= {Algebraic Approach to Single-Pushout Graph
		  Transformation},
  journal	= {Theoretical Computer Science},
  volume	= {109},
  pages		= {181--224},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Ludwigs:80,
  author	= {H. L. Ludwigs},
  title		= {Properties of Ordered Graph Grammars},
  editor	= {H. Noltemeier},
  booktitle	= {Graphtheoric Concepts in Computer Science, Proceedings of
		  the International Workshop WG'80},
  series	= {Lecture Notes in Computer Science},
  number	= {100},
  pages		= {70--79},
  year		= {1980},
  publisher	= {Springer-Verlag},
  added		= {1996-04-16-07-34-15}
}

@InProceedings{	  Lueck-Lueck:83,
  author	= {Jacqueline L{\"u}ck and Hermann B. L{\"u}ck},
  title		= {Generation of 3-Dimensional Plant Bodies By Double Wall
		  Map and Stereomap Systems},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {153},
  pages		= {219--231},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Lueck-Lueck:87,
  author	= {Jacqueline L{\"u}ck and Hermann B. L{\"u}ck},
  title		= {From {OL} and {IL} Map Systems to Intermediate and
		  Deterministic Growth in Plant Morphogenesis},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {393--410},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Lueck-Lueck:91,
  author	= {Jacqueline L{\"u}ck and Hermann B. L{\"u}ck},
  title		= {Double-Wall Cellwork Systems for Plant Meristems},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {564--581},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Lueck-Lueck:96,
  author	= {L{\"u}ck, Jacqueline and L{\"u}ck, Hermann B.},
  title		= {Cellworks with Cell Rewriting and Cell Packing for Plant
		  Morphogenesis},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {536--549},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@TechReport{	  Ly:97,
  author	= {O. Ly},
  title		= {On the logical hierarchy of graphs},
  pages		= {1--15},
  year		= {1997},
  institution	= {Colloqium New trends in Semantics, (satellite workshop of
		  ICALP97)},
  added		= {1998-01-22-10-35-50}
}

@Article{	  MacLane:37,
  author	= {Saunders MacLane},
  title		= {A Structural Characterization of Planar Combinatorial
		  Graphs},
  journal	= {Duke Mathematical Journal},
  volume	= {3},
  pages		= {460--472},
  year		= {1937},
  added		= {1996-03-13-10-09-20}
}

@Book{		  MacLane:71,
  author	= {Saunders MacLane},
  title		= {Categories for Working Mathematicians},
  year		= {1971},
  publisher	= {Springer-Verlag},
  address	= {New York},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Maggiolo-Schettini-Peron:96,
  author	= {Maggiolo-Schettini, Andrea and Peron, Adriano},
  title		= {A Graph Rewriting Framework for Statecharts Semantics},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {107--121},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@InProceedings{	  Maggiolo-Schettini-Winkowski:91,
  author	= {Andrea {Maggiolo-Schettini} and J\'ozef Winkowski},
  title		= {Programmed Derivations of Relational Structures},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {582--598},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Mahr-Wilharm:82,
  author	= {Bernd Mahr and Anne Wilharm},
  title		= {Graph Grammars as a Tool for Description in Computer
		  Processed Control: {A} Case Study},
  editor	= {H. J. Schneider and H. G{\"o}ttler},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  pages		= {165--176},
  year		= {1982},
  publisher	= {Hanser Verlag},
  address	= {M{\"u}nchen/Wien},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Main-Rozenberg:87,
  author	= {M. G. Main and Grzegorz Rozenberg},
  title		= {Fundamentals of Edge-Label Controlled Graph Grammars},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {411--426},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Main-Rozenberg:87b,
  author	= {M. G. Main and Grzegorz Rozenberg},
  title		= {Handle {NLC} Grammars and {R}.{E}. Languages},
  journal	= {Journal of Computer and System Sciences},
  volume	= {35},
  pages		= {195--205},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Main-Rozenberg:90,
  author	= {M. G. Main and Grzegorz Rozenberg},
  title		= {Edge-Label Controlled Graph Grammars},
  journal	= {Journal of Computer and System Sciences},
  volume	= {40},
  pages		= {188--228},
  year		= {1990},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Mayoh:76,
  author	= {B. Mayoh},
  title		= {Another Model for the Development of Multidimensional
		  Organisms},
  editor	= {A. Lindenmayer and G. Rozenberg},
  booktitle	= {Automata, Languages, Development},
  pages		= {469--486},
  year		= {1976},
  publisher	= {North Holland},
  address	= {Amsterdam},
  added		= {1996-03-13-10-09-20}
}

@PhDThesis{	  Meier:82,
  author	= {A. Meier},
  title		= {Semantisches Datenmodell f{\"u}r fl{\"a}chenbezogene Daten},
  year		= {1982},
  school	= {Z{\"u}rich},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Meier:83,
  author	= {A. Meier},
  title		= {A Graph-Relational Approach to Geographic Databases},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {153},
  pages		= {245--254},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Meier:85,
  author	= {A. Meier},
  title		= {A Graph Grammar Approach to Geographic Databases},
  journal	= {Information Systems},
  volume	= {10},
  pages		= {9--19},
  year		= {1985},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Metivier-Muscholl:97,
  author	= {Y. M\'etivier and A. Muscholl},
  title		= {About the local detection of termination of local
		  computations},
  booktitle	= {The 4th International colloquium on structural information
		  and communication complexity},
  year		= {1997},
  publisher	= {Carleton University Press},
  added		= {1998-01-22-10-35-50}
}

@Article{	  Metivier-Sopena:97,
  author	= {Y. M\'etivier and E. Sopena},
  title		= {Graph relabelling systems : a general overview},
  journal	= {Computers and artificial intelligence},
  volume	= {16},
  pages		= {167--185},
  year		= {1997},
  added		= {1998-01-22-10-35-50}
}

@Article{	  Mezei-Wright:67,
  author	= {J. Mezei and J. B. Wright},
  title		= {Algebraic Automata and Context-Free Sets},
  journal	= {Information and Control},
  volume	= {11},
  pages		= {3--29},
  year		= {1967},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Mizoguchi-Kawahara:95,
  author	= {Yoshihiro Mizoguchi and Yasuo Kawahara},
  title		= {Relational Graph rewrtings},
  journal	= {Theoretical Computer Science},
  volume	= {11},
  pages		= {311--328},
  year		= {1995},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Moessle-Vogler:97,
  author	= {M\"o\ss{}le, Andrea and Vogler, Heiko},
  title		= {Benefits of Hypergraphs for Program Transformation},
  editor	= {M. Jarke, K. Pasedach, K. Pohl},
  booktitle	= {Proc.\ Informatik '97},
  series	= {Reihe Informatik aktuell},
  pages		= {572--581},
  year		= {1997},
  publisher	= {Springer Verlag},
  added		= {1998-04-14-09-05-12}
}

@InProceedings{	  Moldovan-Parisi-Presicce:87,
  author	= {D. Moldovan and Francesco {Parisi-Presicce}},
  title		= {Parallelism Analysis in Rule-Based Systems Using Graph
		  Grammars},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {427--439},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Montanari-Rossi:87,
  author	= {Ugo Montanari and Francesca Rossi},
  title		= {An Efficient Algorithm for the Solution of Hierarchical
		  Networks of Constraints},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {440--457},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Montanari-Rossi:91,
  author	= {Ugo Montanari and Francesca Rossi},
  title		= {A True Concurrency Semantics for Concurrent Constraint
		  Programming},
  year		= {1991},
  organization	= {ILPS91},
  publisher	= {MIT Press},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Montanari-Rossi:93,
  author	= {Ugo Montanari and Francesca Rossi},
  title		= {Graph Rewriting for a Partial Ordering Semantics of
		  Concurrent Constraint Programming},
  journal	= {Theoretical Computer Science},
  volume	= {109},
  pages		= {225--256},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@Unpublished{	  Montanari-Rossi:97,
  author	= {Montanari, U. and Rossi, F.},
  title		= {Graph Rewriting, Constraint Solving and Tiles for
		  Coordinating Distributed Systems},
  year		= {1997},
  note		= {Submitted for publication},
  added		= {1998-01-22-10-35-50}
}

@Article{	  Montanari:70,
  author	= {Ugo Montanari},
  title		= {Separable Graphs, Planar Graphs and Web Grammars},
  journal	= {Information and Control},
  volume	= {16},
  pages		= {243--267},
  year		= {1970},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Mosbah-Saheb:96,
  author	= {M. Mosbah and N. Saheb},
  title		= {Non Uniform Random Spanning Trees on Weighted Graphs},
  number	= {1143--96},
  year		= {1996},
  institution	= {LaBRI, University of Bordeaux},
  note		= {Submitted to Theoret. Comput. Science},
  added		= {1998-01-22-10-35-50}
}

@InProceedings{	  Mosbah-Saheb:97,
  author	= {M. Mosbah and N. Saheb},
  title		= {A Syntactic Approach to Random Walks on Graphs},
  booktitle	= {23rd International Workshop, WG'97},
  year		= {1997},
  month		= {June},
  publisher	= {Lect. Notes. Comput. Sci., to appear},
  address	= {Berlin, Germany},
  note		= {Technical Report 1163--97, University of Bordeaux},
  added		= {1998-01-22-10-35-50}
}

@InProceedings{	  Mosbah-Saheb:97b,
  author	= {M. Mosbah and N. Saheb},
  title		= {Formal Rational Fractions and Random Walks on Cycle
		  Graphs},
  booktitle	= {Formal Power Series and Algebraic Combinatorics, 9th
		  Conference},
  year		= {1997},
  month		= {July},
  address	= {Vienna, Austria},
  note		= {Technical Report 1147--96, University of Bordeaux},
  added		= {1998-01-22-10-35-50}
}

@InProceedings{	  Mosbah:92,
  author	= {M. Mosbah},
  title		= {Probabilistic Graph Grammars},
  editor	= {E. W. Mayr},
  booktitle	= {Graph-Theoric Concepts in Computer Science, 18th
		  International Workshop, Wiesbaden-Naurod, Germany},
  series	= {Lecture Notes in Computer Science},
  number	= {657},
  pages		= {236--247},
  year		= {1992},
  publisher	= {Springer-Verlag},
  added		= {1996-04-16-07-34-15}
}

@TechReport{	  Mueller:96,
  author	= {M{\"u}ller, J.},
  title		= {On Termination of Single-Pushout Graph Rewriting},
  number	= {96-38},
  year		= {1996},
  institution	= {TU Berlin},
  type		= {Technical Report},
  added		= {1998-01-22-10-35-50}
}

@PhDThesis{	  Munz:76,
  author	= {R. Munz},
  title		= {Das Web-Modell},
  year		= {1976},
  school	= {Stuttgart},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Nagl-Engels-Gall.ea:83,
  author	= {Manfred Nagl and Gregor Engels and Rupert Gall and Wilhelm
		  Sch{\"a}fer},
  title		= {Software Specification by Graph Grammars},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {153},
  pages		= {267--287},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@Proceedings{	  Nagl-Perl:83,
  title		= {Proc.\ {WG83} intl.\ workshop on graphtheoretic concepts
		  in c.sc.},
  editor	= {M. Nagl and J. Perl},
  year		= {1983},
  publisher	= {Trauner-Verlag},
  address	= {Linz},
  added		= {1996-08-02-14-49-29}
}

@InProceedings{	  Nagl-Schuerr:91,
  author	= {Manfred Nagl and Andy Sch{\"u}rr},
  title		= {A Specification Environment for Graph Grammars},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {599--609},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Nagl-Schuerr:96,
  author	= {Nagl, Manfred and Sch{\"u}rr, Andy},
  title		= {Software Integration Problems and Coupling of Graph
		  Grammar Specifications},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {155--169},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@TechReport{	  Nagl:73,
  author	= {Manfred Nagl},
  title		= {{Beziehungen zwischen verschiedenen Klassen von
		  Diagramm-Sprachen}},
  number	= {6, 3, 72-93},
  year		= {1973},
  institution	= {Institut f{\"u}r Mathematische Maschinen und
		  Datenverarbeitung},
  address	= {Erlangen},
  type		= {Arbeitsbericht},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Nagl:73b,
  author	= {Manfred Nagl},
  title		= {{Eine Pr\"azisierung des Pfaltz/Rosenfeldschen
		  Produktionsbegriffs bei mehrdimensionalen Grammatiken}},
  number	= {6a, 3, 56-71},
  year		= {1973},
  institution	= {Institut f{\"u}r Mathematische Maschinen und
		  Datenverarbeitung},
  address	= {Erlangen},
  type		= {Arbeitsbericht},
  added		= {1996-03-13-10-09-20}
}

@PhDThesis{	  Nagl:74,
  author	= {Manfred Nagl},
  title		= {{Formale Sprachen von markierten Graphen}},
  year		= {1974},
  school	= {Erlangen},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Nagl:76,
  author	= {Manfred Nagl},
  title		= {Formal Languages of Labelled Graphs},
  journal	= {Computing},
  volume	= {16},
  pages		= {113--137},
  year		= {1976},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Nagl:79,
  author	= {Manfred Nagl},
  title		= {A Tutorial and Bibliographical Survey on Graph Grammars},
  editor	= {V. Claus and H. Ehrig and G. Rozenberg},
  booktitle	= {Graph-Grammars and Their Application to Computer Science
		  and Biology},
  series	= {Lecture Notes in Computer Science},
  volume	= {73},
  pages		= {70--126},
  year		= {1979},
  added		= {1996-03-13-10-09-20}
}

@Book{		  Nagl:79b,
  author	= {Manfred Nagl},
  title		= {Graph-Grammatiken: Theorie, Anwendungen,
		  Implementierungen},
  year		= {1979},
  publisher	= {Vieweg},
  address	= {Braunschweig},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Nagl:83,
  author	= {Manfred Nagl},
  title		= {Bibliography on Graph-Rewriting Systems (Graph Grammars)},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {153},
  pages		= {415--448},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Nagl:87,
  author	= {Manfred Nagl},
  title		= {A Software Development Environment Based on Graph
		  Technology},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {458--478},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Nagl:87b,
  author	= {Manfred Nagl},
  title		= {Set Theoretic Approaches to Graph Grammars},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {41--54},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@Proceedings{	  Nagl:90,
  title		= {Proc.\ {WG89} 15th int.\ Workshop on graphtheoretic
		  concepts in comp.\ sci.},
  editor	= {M. Nagl},
  series	= {Lecture Notes in Computer Science},
  number	= {411},
  year		= {1990},
  publisher	= {Springer-Verlag},
  added		= {1996-08-02-14-49-29}
}

@Book{		  Nagl:90b,
  author	= {M. Nagl},
  title		= {{Softwaretechnik: Methodisches Programmieren im
		  Gro{\ss}en}},
  year		= {1990},
  publisher	= {Springer-Verlag},
  note		= {(in German)},
  added		= {1996-08-02-14-49-29}
}

@Book{		  Nagl:96,
  title		= {The IPSEN Project},
  editor	= {M. Nagl},
  series	= {Lecture Notes in Computer Science},
  year		= {1996},
  publisher	= {Springer-Verlag},
  note		= {to appear},
  added		= {1996-08-02-14-49-29}
}

@Article{	  Padawitz:82,
  author	= {Peter Padawitz},
  title		= {Graph Grammars and Operational Semantics},
  journal	= {Theoretical Computer Science},
  volume	= {19},
  pages		= {117--141},
  year		= {1982},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Parikh:61,
  author	= {Rohit J. Parikh},
  title		= {Language Generating Devices},
  number	= {60},
  pages		= {199--212},
  year		= {1961},
  institution	= {Research Laboratory of Electronics, M.I.T.},
  type		= {Quarterly Progress Report},
  added		= {1996-03-28-11-35-01}
}

@Article{	  Parikh:66,
  author	= {Rohit J. Parikh},
  title		= {On Context-Free Languages},
  journal	= {Journal of the Association for Computing Machinery},
  volume	= {13},
  pages		= {570--581},
  year		= {1966},
  added		= {1996-03-28-11-35-01}
}

@InProceedings{	  Parisi-Presicce-Ehrig-Montanari:87,
  author	= {Francesco {Parisi-Presicce} and Hartmut Ehrig and Ugo
		  Montanari},
  title		= {Graph Rewriting with Unification and Composition},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {496--514},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Parisi-Presicce-Piersanti:95,
  author	= {Francesco {Parisi-Presicce} and Gabriele Piersanti},
  title		= {Multilevel Graph Grammars},
  editor	= {W. {Mayr, Ernst} and Gunter Schmidt and Gottfried
		  Tinhofer},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {903},
  pages		= {51--64},
  year		= {1995},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Parisi-Presicce:89,
  author	= {Francesco {Parisi-Presicce}},
  title		= {Modular System Design Applying Graph Grammar Techniques},
  editor	= {G. Ausiello and M. {Dezani-Ciancaglini} and S. Ronchi
		  Della Rocca},
  booktitle	= {Automata, Languages and Programming},
  series	= {Lecture Notes in Computer Science},
  volume	= {372},
  pages		= {621--636},
  year		= {1989},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Parisi-Presicce:90,
  author	= {Francesco {Parisi-Presicce}},
  title		= {A Rule Based Approach to Modular System Design},
  booktitle	= {12th Int. Conf. Software Engineering},
  pages		= {202--211},
  year		= {1990},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Parisi-Presicce:92,
  author	= {F. Parisi-Presicce},
  title		= {Single vs. double pushout derivations of graphs},
  editor	= {E. W. Mayr},
  booktitle	= {Graph-theoric concepts in computer science : proceedings
		  18th international workshop, WG'92},
  series	= {LNCS},
  number	= {657},
  pages		= {248--262},
  year		= {1992},
  publisher	= {Springer Verlag},
  added		= {1996-04-16-07-34-15}
}

@InProceedings{	  Parisi-Presicce:96,
  author	= {Parisi-Presicce, Francesco},
  title		= {Transformations of Graph Grammars},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {428--442},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@Book{		  Paulisch:93,
  author	= {Francis Newbery Paulisch},
  title		= {The Design of an Extendible Graph Editor},
  series	= {Lecture Notes in Computer Science},
  number	= {704},
  year		= {1993},
  publisher	= {Springer-Verlag},
  address	= {Berlin},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Pavlidis:72,
  author	= {Theodosios Pavlidis},
  title		= {Linear and Context-Free Graph Grammars},
  journal	= {Journal of the ACM},
  volume	= {19},
  number	= {1},
  pages		= {11--23},
  year		= {1972},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Pavlidis:72b,
  author	= {Theodosios Pavlidis},
  title		= {Representation of Figures by Labeled Graphs},
  journal	= {Pattern Recognition},
  volume	= {4},
  pages		= {5--17},
  year		= {1972},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Pavlidis:80,
  author	= {Theodosios Pavlidis},
  title		= {Structural Descriptions and Graph Grammars},
  editor	= {S. K. Chang and K. S. Fu},
  booktitle	= {Pictorial Inf. Syst.},
  series	= {Lecture Notes in Computer Science},
  volume	= {80},
  pages		= {86--103},
  year		= {1980},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Paz:91,
  author	= {A. Paz},
  title		= {The Theory of Graphoids: {A} Survey},
  editor	= {H. Erhig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  number	= {532},
  pages		= {610--621},
  year		= {1991},
  publisher	= {Springer-Verlag},
  added		= {1996-04-16-07-34-15}
}

@Article{	  Pelecq:97,
  author	= {L. Pelecq},
  title		= {Isomorphismes et automorphismes des graphes
		  contextfr-free, {\'e}quationnels et automatiques},
  journal	= {Th\`ese de doctorat,universit\'e Bordeaux 1},
  pages		= {1--127},
  year		= {1997},
  added		= {1998-01-22-10-35-50}
}

@Article{	  Petrov:78,
  author	= {S. V. Petrov},
  title		= {Graph Grammars and Automata (Survey)},
  journal	= {Automation and Remote Control},
  volume	= {39},
  pages		= {1034--1050},
  year		= {1978},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Pfaltz-Rosenfeld:69,
  author	= {John L. Pfaltz and Azriel Rosenfeld},
  title		= {Web Grammars},
  booktitle	= {Int. Joint Confenence on Artificial Intelligence},
  pages		= {609--619},
  year		= {1969},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Pfaltz:72,
  author	= {John L. Pfaltz},
  title		= {Web Grammars and Picture Description},
  journal	= {Computer Graphics and Image Processing},
  volume	= {1},
  pages		= {193--220},
  year		= {1972},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Pfaltz:83,
  author	= {J. L. Pfaltz},
  title		= {Transformation structures by convex homomorphisms},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science,
		  2nd International Workshop, Haus Ohrbeck, Germany},
  series	= {Lecture Notes in Computer Sciences},
  number	= {153},
  pages		= {297--313},
  year		= {1983},
  publisher	= {Spinger-Verlag},
  added		= {1996-04-16-07-34-15}
}

@MastersThesis{	  Pickartz:95,
  author	= {Pickartz, W.},
  title		= {{Generierungsmechanismen f{\"u}r graphische Editoren}},
  year		= {1995},
  address	= {RWTH Aachen},
  type		= {Diplomarbeit},
  school	= {Lehrstuhl f{\"u}r Informatik III},
  added		= {1996-11-28-18-33-07}
}

@Book{		  Plasmeijer-vanEekelen:93,
  title		= {Functional Programming and Parallel Graph Rewriting},
  editor	= {Rinus Plasmeijer and Marko {van Eekelen}},
  year		= {1993},
  publisher	= {Addison-Wesley},
  address	= {Wokingham, England},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Plump-Habel:96,
  ATTENTION	= {newer record added: Jul 30, 1996},
  author	= {Detlef Plump and Annegret Habel},
  title		= {Graph Unification and Matching},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  year		= {1996},
  note		= {To appear},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Plump-Habel:96b,
  author	= {Detlef Plump and Annegret Habel},
  title		= {Graph Unification and Matching},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  number	= {1073},
  pages		= {75--88},
  year		= {1996},
  added		= {1996-07-30-13-31-20}
}

@InProceedings{	  Plump:91,
  author	= {Detlef Plump},
  title		= {Graph-Reducible Term Rewriting Systems},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {622--636},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Plump:91b,
  author	= {Detlef Plump},
  title		= {Implementing Term Rewriting by Graph Reduction:
		  Termination of Combined Systems},
  editor	= {S. Kaplan and M. Okada},
  booktitle	= {Conditional and Typed Rewriting Systems},
  series	= {Lecture Notes in Computer Science},
  volume	= {516},
  pages		= {307--317},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Plump:93,
  author	= {Detlef Plump},
  title		= {Collapsed Tree Rewriting: Completeness, Confluence, and
		  Modularity},
  editor	= {M. Rusinowitch and J. L. R\'emy},
  booktitle	= {Proc.\ Conditional Term Rewriting Systems},
  series	= {Lecture Notes in Computer Science},
  volume	= {656},
  pages		= {97--112},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@PhDThesis{	  Plump:93b,
  author	= {Detlef Plump},
  title		= {Evaluation of Functional Expressions by Hypergraph
		  Rewriting},
  year		= {1993},
  school	= {Bremen},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Plump:93c,
  author	= {Detlef Plump},
  title		= {Hypergraph Rewriting: Critical Pairs and Undecidability of
		  Confluence},
  editor	= {Ronan Sleep and Rinus Plasmeijer and Marko {van Eekelen}},
  booktitle	= {Term Graph Rewriting: Theory and Practice},
  chapter	= {15},
  year		= {1993},
  publisher	= {John Wiley},
  address	= {New York},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Plump:94,
  author	= {Detlef Plump},
  title		= {Critical Pairs in Term Graph Rewriting},
  editor	= {Igor Pr\'ivara and Branislav Rovan and Peter
		  Ru\v{z}i\v{c}ka},
  booktitle	= {Mathematical Foundations of Computer Science 1994},
  series	= {Lecture Notes in Computer Science},
  volume	= {841},
  pages		= {556--566},
  year		= {1994},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Plump:95,
  author	= {Detlef Plump},
  title		= {On Termination of Graph Rewriting},
  editor	= {Manfred Nagl},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {1017},
  pages		= {88--100},
  year		= {1995},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Plump:97,
  author	= {Plump, Detlef},
  title		= {Simplification Orders for Term Graph Rewriting},
  editor	= {Pr\'{\i}vara, I. and Ru\v{z}i\v{c}ka, P.},
  booktitle	= {Proc.\ Mathematical Foundations of Computer Science 1997},
  series	= {Lecture Notes in Computer Science},
  volume	= {1295},
  pages		= {458--467},
  year		= {1997},
  added		= {1997-09-01-16-46-57}
}

@TechReport{	  Plump:97b,
  author	= {Detlef Plump},
  title		= {Termination of Graph Rewriting is Undecidable},
  number	= {7/97},
  year		= {1997},
  institution	= {Universit\"at Bremen, Fachbereich Mathematik und
		  Informatik},
  type		= {Informatik-Bericht},
  added		= {1998-01-05-18-25-23}
}

@MastersThesis{	  Poensgen:95,
  author	= {Poensgen, A.},
  title		= {{Generierung eigenst{\"a}ndiger Anwendungen aus PROGRES}},
  year		= {1995},
  address	= {RWTH Aachen},
  type		= {Diplomarbeit},
  school	= {Lehrstuhl f{\"u}r Informatik III},
  added		= {1996-11-28-18-33-07}
}

@Article{	  Pratt:71,
  author	= {Terrence W. Pratt},
  title		= {Pair Grammars, Graph Languages and String-to-Graph
		  Translations},
  journal	= {Journal of Computer and System Sciences},
  volume	= {5},
  pages		= {560--595},
  year		= {1971},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Pratt:79,
  author	= {Terrence W. Pratt},
  title		= {Definition of Programming Language Semantics Using
		  Grammars for Hierarchical Graphs},
  editor	= {V. Claus and H. Ehrig and G. Rozenberg},
  booktitle	= {Graph-Grammars and Their Application to Computer Science
		  and Biology},
  series	= {Lecture Notes in Computer Science},
  volume	= {73},
  pages		= {389--400},
  year		= {1979},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Prusinkiewicz-Kari:96,
  author	= {Prusinkiewicz, Przemyslaw and Kari, Lila},
  title		= {Subapical Bracketed {L}-Systems},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {550--564},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@InProceedings{	  Prusinkiewicz:87,
  author	= {Przemyslaw Prusinkiewicz},
  title		= {Applications of {L}-Systems to Computer Imagery},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {534--548},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  RBloem-JEngelfriet:97,
  author	= {R.~Bloem and J.~Engelfriet},
  title		= {Characterization of properties and relations defined in
		  monadic second order logic on the nodes of trees},
  number	= {97--03},
  year		= {1997},
  month		= aug,
  institution	= {Leiden University},
  address	= {},
  type		= {Tech.Report},
  added		= {1998-01-22-10-35-50}
}

@InProceedings{	  RBloem-JEngelfriet:97b,
  author	= {R.~Bloem and J.~Engelfriet},
  title		= {Monadic second order logic and node relations on graphs
		  and trees},
  editor	= {J.~Mycielski and G.~Rozenberg and A.~Salomaa},
  booktitle	= {Structures in Logic and Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {1261},
  pages		= {144--161},
  year		= {1997},
  publisher	= {Springer-Verlag},
  added		= {1998-01-22-10-35-50}
}

@InProceedings{	  Rabin:64,
  author	= {M. O. Rabin},
  title		= {A Simple Method of Undecidability Proofs and Some
		  Applications},
  booktitle	= {Log. Meth. Phil. Sci. Proc.},
  pages		= {58--68},
  year		= {1964},
  address	= {Jerusalem},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Rabin:69,
  author	= {M. O. Rabin},
  title		= {Decidability of Second-Order Theories and Automata on
		  Infitite Trees},
  journal	= {Trans. of Amer. Math. Soc.},
  volume	= {141},
  pages		= {1--35},
  year		= {1969},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Rajlich:75,
  author	= {V. Rajlich},
  title		= {Dynamics of Discrete Systems and Pattern Reproduction},
  journal	= {Journal of Computer and System Sciences},
  volume	= {11},
  pages		= {186--202},
  year		= {1975},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Rao:95,
  author	= {M. R. K. Krishna Rao},
  title		= {Graph Reducibility of Term Rewriting Systems},
  booktitle	= {Mathematical Foundations of Computer Science},
  series	= {Lecture Notes in Computer Science},
  year		= {1995},
  note		= {To appear},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Raoult-Voisin:94,
  author	= {Jean-Claude Raoult and Fr\'ed\'eric Voisin},
  title		= {Set-Theoretic Graph Rewriting},
  editor	= {Hans J{\"u}rgen Schneider and Hartmut Ehrig},
  booktitle	= {Graph Transformations in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {776},
  pages		= {312--325},
  year		= {1994},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Raoult:84,
  author	= {Jean-Claude Raoult},
  title		= {On Graph Rewritings},
  journal	= {Theoretical Computer Science},
  volume	= {32},
  pages		= {1--24},
  year		= {1984},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Rekers-Schuerr:95,
  author	= {J. Rekers and A. Sch{\"u}rr},
  title		= {A parsing algorithm for context sensitive graph grammars},
  number	= {95-05},
  year		= {1995},
  institution	= {Rijksuniversiteit te Leiden},
  added		= {1996-08-02-14-49-29}
}

@Unpublished{	  Robertson-Seymour,
  author	= {N. Robertson and P. D. Seymour},
  title		= {Graph Minors {XVI}, Wagner's Conjecture},
  note		= {To appear},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Robertson-Seymour:83,
  author	= {N. Robertson and P. D. Seymour},
  title		= {Graph Minors {I}, Excluding a Forest},
  journal	= {Journ. Combinatorial Theory Ser. B},
  volume	= {35},
  pages		= {39--61},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Robertson-Seymour:86,
  author	= {N. Robertson and P. D. Seymour},
  title		= {Graph Minors {II}, Algorithmic Aspects of Tree Width},
  journal	= {Journal of Algorithms},
  volume	= {7},
  pages		= {309--322},
  year		= {1986},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Robertson-Seymour:86b,
  author	= {N. Robertson and P. D. Seymour},
  title		= {Graph Minors {V}, Excluding a Planar Graph},
  journal	= {Journ. Combinatorial Theory Ser. B},
  volume	= {41},
  pages		= {92--114},
  year		= {1986},
  added		= {1996-03-13-10-09-20}
}

@Unpublished{	  Robertson-Seymour:90,
  author	= {N. Robertson and P. D. Seymour},
  title		= {Graph Minors {XIII}. {T}he Disjoint Paths Problem},
  year		= {1990},
  note		= {To appear},
  added		= {1996-03-28-11-35-01}
}

@Article{	  Rose:70,
  author	= {Donald J. Rose},
  title		= {Triangulated Graphs and the Elimination Process},
  journal	= {Journal of Mathematical Analysis and Applications},
  volume	= {33},
  pages		= {597--609},
  year		= {1970},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Rose:74,
  author	= {Donald J. Rose},
  title		= {On Simple Characterizations of $k$-Trees},
  journal	= {Discrete Mathematics},
  volume	= {7},
  pages		= {317--322},
  year		= {1974},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Rosen:73,
  author	= {Barry K. Rosen},
  title		= {Tree-Manipulating Systems and {Church-Rosser} Theorems},
  journal	= {Journal of the ACM},
  volume	= {20},
  pages		= {160--187},
  year		= {1973},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Rosen:75,
  author	= {Barry K. Rosen},
  title		= {A {Church-Rosser} Theorem for Graph Grammars},
  journal	= {Sigact News},
  volume	= {7},
  number	= {3},
  pages		= {26--31},
  year		= {1975},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Rosen:75b,
  author	= {Barry K. Rosen},
  title		= {Deriving Graphs from Graphs by Applying a Production},
  journal	= {Acta Informatica},
  volume	= {4},
  pages		= {337--357},
  year		= {1975},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Rosenfeld-Milgram:72,
  author	= {Azriel Rosenfeld and D. Milgram},
  title		= {Web Automata and Web Grammars},
  journal	= {Machine Intelligence},
  volume	= {7},
  pages		= {307--324},
  year		= {1972},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Rosenfeld:71,
  author	= {Azriel Rosenfeld},
  title		= {Isotonic Grammars, Parallel Grammars, and Picture
		  Grammars},
  journal	= {Machine Intelligence},
  volume	= {6},
  pages		= {281--294},
  year		= {1971},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Rosenfeld:76,
  author	= {Azriel Rosenfeld},
  title		= {Array and Web Languages: An Overwiew},
  editor	= {A. Lindenmayer and G. Rozenberg},
  booktitle	= {Automata, Languages, Development},
  pages		= {517--529},
  year		= {1976},
  publisher	= {North Holland},
  address	= {Amsterdam},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Rosenfeld:87,
  author	= {Azriel Rosenfeld},
  title		= {Array Grammars},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {67--70},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@Proceedings{	  Rozenberg-Salomaa:86,
  title		= {The Book of {L}},
  editor	= {Grzegorz Rozenberg and Arto Salomaa},
  year		= {1986},
  publisher	= {Springer-Verlag},
  address	= {Berlin},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Rozenberg-Welzl:86,
  author	= {Grzegorz Rozenberg and Emo Welzl},
  title		= {Boundary {NLC} Graph Grammars---Basic Definitions, Normal
		  Forms, and Complexity},
  journal	= {Information and Control},
  volume	= {69},
  pages		= {136--167},
  year		= {1986},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Rozenberg-Welzl:86b,
  author	= {Grzegorz Rozenberg and Emo Welzl},
  title		= {Graph Theoretic Closure Properties of the Family of
		  Boundary {NLC} Graph Languages},
  journal	= {Acta Informatica},
  volume	= {23},
  pages		= {289--309},
  year		= {1986},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Rozenberg-Welzl:87,
  author	= {Grzegorz Rozenberg and Emo Welzl},
  title		= {Combinatorial Properties of Boundary {NLC} Graph
		  Languages},
  journal	= {Discrete Applied Mathematics},
  volume	= {16},
  pages		= {59--73},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Rozenberg:87,
  author	= {Grzegorz Rozenberg},
  title		= {An Introduction to the {NLC} Way of Rewriting Graphs},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg and A. Rosenfeld},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {55--66},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@Book{		  Rozenberg:96,
  title		= {Special issue on graph transformation systems},
  editor	= {Grzegorz Rozenberg},
  series	= {Fundamanta Informaticae},
  volume	= {XXVII},
  number	= {1/2},
  year		= {1996},
  publisher	= {IOS Press},
  added		= {1996-08-02-14-49-29}
}

@Book{		  Rozenberg:97,
  title		= {Handbook of Graph Grammars and Computing by Graph
		  Transformation. Vol.\ {I}: Foundations},
  editor	= {Rozenberg, Grzegorz},
  year		= {1997},
  publisher	= {World Scientific},
  added		= {1997-03-18-10-42-26}
}

@Book{		  Salomaa:73,
  author	= {A. Salomaa},
  title		= {Formal Languages},
  year		= {1973},
  publisher	= {Academic Press},
  address	= {New York},
  added		= {1996-03-28-11-35-01}
}

@InProceedings{	  Sanfeliu-Fu:83,
  author	= {A. Sanfeliu and K. S. Fu},
  title		= {Tree Graph Grammars for Pattern Recognition},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {153},
  pages		= {349--368},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Saxe:80,
  author	= {J. Saxe},
  title		= {Dynamic Programming Algorithms for Recognizing
		  Small-Band\-width Graphs in Polynomial Time},
  journal	= {SIAM Journ. Algebraic Discrete Methods},
  volume	= {1},
  pages		= {363--369},
  year		= {1980},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Schied:92,
  author	= {G. Schied},
  title		= {{{\"U}ber Graphgrammatiken: eine Spezifikationsmethode
		  f{\"u}r Programmiersprachen und verteilte Regelsysteme}},
  number	= {25-2},
  year		= {1992},
  institution	= {IMMD, Universit{\"a}t Erlangen},
  note		= {Doctoral dissertation},
  added		= {1996-08-02-14-49-29}
}

@Article{	  Schmeck:83,
  author	= {H. Schmeck},
  title		= {Algebraic Characterization of Reducible Flowcharts},
  journal	= {Journal of Computer and System Sciences},
  volume	= {27},
  pages		= {165--199},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Schmeck:83b,
  author	= {H. Schmeck},
  title		= {Flow Graph Grammars and Flow Graph Languages},
  editor	= {M. Nagl and J. Perl},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  pages		= {319--329},
  year		= {1983},
  publisher	= {Trauner Verlag},
  address	= {Linz},
  added		= {1996-03-13-10-09-20}
}

@Book{		  Schmidt-Berghammer:91,
  title		= {Proc.\ Int.\ workshop on graphtheoretic concepts in
		  computer science},
  editor	= {G. Schmidt and R. Berghammer},
  series	= {Lecture Notes in Computer Science},
  volume	= {570},
  year		= {1991},
  publisher	= {Springer-Verlag},
  added		= {1996-08-02-14-49-29}
}

@Article{	  Schneider-Ehrig:76,
  author	= {Hans J{\"u}rgen Schneider and Hartmut Ehrig},
  title		= {Grammars on Partial Graphs},
  journal	= {Acta Informatica},
  volume	= {6},
  pages		= {297--316},
  year		= {1976},
  added		= {1996-03-13-10-09-20}
}

@Proceedings{	  Schneider-Ehrig:94,
  title		= {Graph Transformations in Computer Science},
  editor	= {Hans J{\"u}rgen Schneider and Hartmut Ehrig},
  series	= {Lecture Notes in Computer Science},
  volume	= {776},
  year		= {1994},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Schneider:70,
  author	= {Hans J{\"u}rgen Schneider},
  title		= {{Chomsky-Systeme f\"ur partielle Ordnungen}},
  number	= {3,3},
  year		= {1970},
  institution	= {Institut f{\"u}r Mathematische Maschinen und
		  Datenverarbeitung},
  address	= {Erlangen},
  type		= {Arbeitsbericht},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Schneider:71,
  author	= {Hans J{\"u}rgen Schneider},
  title		= {Formal Systems for Structure Manipulations},
  number	= {3/1/71},
  year		= {1971},
  institution	= {Berlin},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Schneider:75,
  author	= {Hans J{\"u}rgen Schneider},
  title		= {Syntax-Directed Description of Incremental Compilers},
  editor	= {D. Siefkes},
  booktitle	= {GI --- 4. Jahrestagung},
  series	= {Lecture Notes in Computer Science},
  volume	= {26},
  pages		= {192--201},
  year		= {1975},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Schneider:77,
  author	= {Hans J{\"u}rgen Schneider},
  title		= {Graph Grammars},
  editor	= {M. Karpi\'nski},
  booktitle	= {Fundamentals of Computation Theory},
  series	= {Lecture Notes in Computer Science},
  volume	= {56},
  pages		= {314--331},
  year		= {1977},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Schneider:90,
  author	= {Hans J{\"u}rgen Schneider},
  title		= {Describing Distributed Systems by Categorical Graph
		  Grammars},
  editor	= {M. Nagl},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {411},
  pages		= {121--135},
  year		= {1990},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Schneider:93,
  author	= {Hans J{\"u}rgen Schneider},
  title		= {On Categorical Graph Grammars: Integrating Structural
		  Transformations and Operations on Labels},
  journal	= {Theoretical Computer Science},
  volume	= {109},
  pages		= {257--274},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Schnitzler:80,
  author	= {M. Schnitzler},
  title		= {Graph grammars and the complexity gap in the isomorphism
		  problem for acyclic digraphs},
  editor	= {H.. Noltemeier},
  booktitle	= {Graphtheoric Concepts in Computer Science, Proceedings of
		  the International Workshop WG'80},
  series	= {Lecture Notes in Computer Science},
  number	= {100},
  pages		= {137--149},
  year		= {1980},
  publisher	= {Springer-Verlag},
  added		= {1996-04-16-07-34-15}
}

@InProceedings{	  Schnitzler:83,
  author	= {M. Schnitzler},
  title		= {The Isomorphism Problem is Polynomially Solvable for
		  Certain Graph Languages},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {153},
  pages		= {369--379},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@Manual{	  Schuerr,
  author	= {A. Sch{\"u}rr},
  title		= {A {G}uided {T}our through the {PROGRES} {E}nvironnement},
  organization	= {{RWTH} Aachen},
  address	= {D-52056 Aachen, Germany},
  added		= {1996-04-16-07-34-15}
}

@InProceedings{	  Schuerr:90,
  author	= {Andy Sch{\"u}rr},
  title		= {Introduction to {PROGRES}, an Attribute Graph Grammar
		  Based Specification Language},
  editor	= {M. Nagl},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {411},
  pages		= {151--165},
  year		= {1990},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Schuerr:91,
  author	= {Andy Sch{\"u}rr},
  title		= {{IPSEN}-Environment: An Integrated and {I}ncremental
		  {P}roject {S}upport {EN}vironment},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {66},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@Book{		  Schuerr:91b,
  author	= {Andy Sch{\"u}rr},
  title		= {Operationales Spezifizieren mit programmierten
		  Graphersetzungssystemen: formale Definitionen
		  Anwendungsbeispiele und Werkzeugunterst{\"u}tzung},
  year		= {1991},
  publisher	= {Deutscher Universit{\"a}ts-Verlag},
  address	= {Wiesbaden},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Schuerr:91c,
  author	= {Andy Sch{\"u}rr},
  title		= {{PROGRES}: {A} {VHL}-Language Based on Graph Grammars},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {641--659},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Schuerr:91d,
  author	= {Andy Sch{\"u}rr},
  title		= {{PROGRES}-Editor: {A} Text-Oriented Hybrid Editor for
		  {PRO}grammed {G}raph {RE}writing {S}y{St}ems},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {67},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@PhDThesis{	  Schuerr:91e,
  author	= {A. Sch{\"u}rr},
  title		= {{O}perational {S}pecifications with {P}rogrammed {G}raph
		  {R}ewriting {S}ystems},
  year		= {1991},
  organization	= {{RWTH} Aachen},
  address	= {D-52056 Aachen, Germany},
  school	= {{RWTH} Aachen},
  added		= {1996-04-16-07-34-15}
}

@Book{		  Schuerr:91f,
  author	= {A. Sch{\"u}rr},
  title		= {{Operationales Spezifizieren mit programmierten
		  Graphersetzungssystemen: formale Definitionen, Anwendungen
		  und Werkzeuge}},
  year		= {1991},
  publisher	= {Deutscher Universit{\"a}tsverlag},
  note		= {Dissertation, RWTH Aachen},
  added		= {1996-08-02-14-49-29}
}

@InProceedings{	  Schuerr:94,
  ATTENTION	= {newer record added: Aug 02, 1996},
  author	= {Andy Sch{\"u}rr},
  title		= {Rapid Programming with Graph Rewrite Rules},
  series	= {USENIX Symp. Very High Level Languages (VHLL),Santa Fee,
		  New Mexico},
  pages		= {83--100},
  year		= {1994},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Schuerr:94b,
  author	= {A. Sch{\"u}rr},
  title		= {A fixpoint semantics for programmed graph
		  transformations},
  editor	= {Valente Feruglio et al.},
  booktitle	= {Proc. Colloq. on graph transformations and its applic. in
		  comp.\ sci.},
  journal	= {Tech. report B-14},
  year		= {1994},
  publisher	= {Universitat de les Illes Balears},
  added		= {1996-08-02-14-49-29}
}

@TechReport{	  Schuerr:94c,
  author	= {A. Sch{\"u}rr},
  title		= {{PROGRES}, a visual language and environment for
		  programming with graph rewrite systems},
  number	= {AIB 94-11},
  year		= {1994},
  publisher	= {RWTH Aachen},
  added		= {1996-08-02-14-49-29}
}

@InProceedings{	  Schuerr:94d,
  author	= {A. Sch{\"u}rr},
  title		= {Rapid Programming with Graph Rewrite Rules},
  booktitle	= {USENIX Symposium on Very High Level Languages},
  pages		= {83--100},
  year		= {1994},
  publisher	= {USENIX Association},
  added		= {1996-08-02-14-49-29}
}

@Article{	  Schuerr:94e,
  author	= {A. Sch{\"u}rr},
  title		= {Specification of graph translators with triple graph
		  grammars},
  editor	= {G. Tinhofer},
  booktitle	= {Proc. {WG94} int.workshop on graph theoretic concepts in
		  comp.\ sci.},
  series	= {Lecture Notes in Computer Science},
  number	= {903},
  pages		= {151--163},
  year		= {1994},
  publisher	= {Springer-Verlag},
  address	= {Herrsching},
  added		= {1996-08-02-14-49-29}
}

@Article{	  Schuerr:95,
  author	= {A. Sch{\"u}rr},
  title		= {Logic Based Programmed Structure Rewriting Systems},
  journal	= {Fundamentae Informaticae, Special Issue on Graph
		  Transformation Systems},
  year		= {1995},
  note		= {to appear},
  added		= {1996-08-02-14-49-29}
}

@Article{	  Schuerr:96,
  author	= {Andy Sch{\"u}rr},
  title		= {Logic Based Programmed Structure Rewriting Systems},
  journal	= {Fundamenta Informaticae},
  volume	= {XXVII},
  year		= {1996},
  note		= {To appear},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Schuerr:96b,
  ATTENTION	= {newer record added: Jul 30, 1996},
  author	= {Andy Sch{\"u}rr},
  title		= {Programmed Graph Transformations and Graph Transformation
		  Units in {GRACE}},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  year		= {1996},
  note		= {To appear},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Schuerr:96c,
  author	= {Sch{\"u}rr, Andy},
  title		= {Programmed Graph Transformations and Graph Transformation
		  Units in {GRACE}},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {122--136},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-07-30-13-31-20}
}

@InCollection{	  Schuerr:97,
  author	= {Sch\"urr, Andy},
  title		= {Programmed Graph Replacement Systems},
  editor	= {Rozenberg, G.},
  booktitle	= {Handbook of Graph Grammars and Computing by Graph
		  Transformation. Vol.\ {I}: Foundations},
  chapter	= {7},
  pages		= {479--546},
  year		= {1997},
  publisher	= {World Scientific},
  added		= {1997-03-17-16-11-19}
}

@Manual{	  Schuerrb,
  author	= {A. {S}ch{\"u}rr},
  title		= {{PROGRES} for {B}eginners},
  organization	= {{RWTH} Aachen},
  address	= {D-52056 Aachen, Germany},
  added		= {1996-04-16-07-34-15}
}

@Book{		  Schuette:87,
  author	= {A. Sch{\"u}tte},
  title		= {Spezifikation und Generierung von {\"U}bersetzern f{\"u}r
		  Graph-Sprachen durch attributierte Graph-Grammatiken,
		  Ph.{D}. Thesis},
  year		= {1987},
  publisher	= {Express-Edition},
  address	= {Berlin},
  added		= {1996-03-13-10-09-20}
}

@Book{		  Schuette:87b,
  author	= {A. Sch{\"u}tte},
  title		= {{Spezifikation und Generierung von {\"U}bersetzern f{\"u}r
		  Graphsprachen durch attributierte Grammatiken}},
  year		= {1987},
  publisher	= {Express Edition},
  note		= {Dissertation, EWH Koblenz},
  added		= {1996-08-02-14-49-29}
}

@PhDThesis{	  Schuster:87,
  author	= {R{\"u}diger Schuster},
  title		= {{Graphgrammatiken und Grapheinbettung --- Algorithmen und
		  Komplexit\"at}},
  year		= {1987},
  school	= {Passau},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Schween-Taentzer:91,
  author	= {Holger Schween and Gabriele Taentzer},
  title		= {Movement of Objects in Configuration Spaces Modelled by
		  Graph Grammars},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {660--675},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Seese:,
  author	= {Detlef Seese},
  title		= {The Structure of the Models of Decidable Monadic Theories
		  of Graphs},
  journal	= {Preprint 1987, to appear in the Journ. of Pure and Applied
		  Logic},
  year		= {??},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Seese:85,
  author	= {Detlef Seese},
  title		= {Tree-Partite Graphs and the Complexity of Algorithms},
  editor	= {L. Budach},
  booktitle	= {Fundamentals of Computation Theory},
  series	= {Lecture Notes in Computer Science},
  volume	= {199},
  pages		= {412--421},
  year		= {1985},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Seidl:92,
  author	= {Helmut Seidl},
  title		= {Finite Tree Automata with Cost Functions},
  editor	= {J.-C. Raoult},
  booktitle	= {CAAP 92},
  series	= {Lecture Notes in Computer Science},
  volume	= {581},
  pages		= {279--299},
  year		= {1992},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Seidl:92b,
  author	= {Helmut Seidl},
  title		= {Single-Valuedness of Tree Transducers is Decidable in
		  Polynomial Time},
  journal	= {Theoretical Computer Science},
  volume	= {106},
  pages		= {135--181},
  year		= {1992},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Seidl:94,
  author	= {Helmut Seidl},
  title		= {Equivalence of Finite-Valued Tree Transducers Is
		  Decidable},
  journal	= {Mathematical Systems Theory},
  volume	= {27},
  pages		= {285--346},
  year		= {1994},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Seidl:94b,
  author	= {Helmut Seidl},
  title		= {Finite Tree Automata with Cost Functions},
  journal	= {Theoretical Computer Science},
  volume	= {126},
  pages		= {113--142},
  year		= {1994},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Seidl:94c,
  author	= {Helmut Seidl},
  title		= {Least Solutions of Equations over ${\cal N}$},
  editor	= {Serge Abiteboul and Eli Shamir},
  booktitle	= {Automata, Languages and Programming},
  series	= {Lecture Notes in Computer Science},
  volume	= {820},
  pages		= {400--411},
  year		= {1994},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Shaw:69,
  author	= {A. C. Shaw},
  title		= {A Formal Description Schema as a Basis for Picture
		  Processing Systems},
  journal	= {Information and Control},
  volume	= {14},
  pages		= {9--52},
  year		= {1969},
  added		= {1996-03-28-11-35-01}
}

@InProceedings{	  Sheu-Long:92,
  author	= {M.-J. Sheu and T. J. Long},
  title		= {{UP} and the Low and High Heirarchies: {A} Relativized
		  Separation},
  editor	= {W. Kuich},
  booktitle	= {Automata, Languages and Programming, 19th International
		  Colloquium, Wien, Austria},
  series	= {Lecture Notes in Computer Science},
  number	= {623},
  pages		= {174--185},
  year		= {1992},
  publisher	= {Springer-Verlag},
  added		= {1996-04-16-07-34-15}
}

@Article{	  Skodinis-Wanke:95,
  author	= {Kostantin Skodinis and Wanke},
  title		= {Emptiness Problems of {eNCE} Graph Languages},
  journal	= {Journal of Computer and System Sciences},
  volume	= {51},
  pages		= {472--485},
  year		= {1995},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Skodinis-Wanke:95b,
  author	= {Kostantin Skodinis and Wanke},
  title		= {Exponential Time Analysis of Confluent and Boundary {eNCE}
		  Graph Languages},
  editor	= {W. {Mayr, Ernst} and Gunter Schmidt and Gottfried
		  Tinhofer},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {903},
  pages		= {180--192},
  year		= {1995},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Skodinis-Wanke:95c,
  author	= {Kostantin Skodinis and Wanke},
  title		= {The Bounded Degree Problem for Nonobstructing {eNCE} Graph
		  Grammars},
  year		= {1995},
  note		= {Submitted for publication},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Skodinis-Wanke:95d,
  author	= {Kostantin Skodinis and Wanke},
  title		= {The Complexity of the Bounded Degree Problem for {eNCE}
		  Graph Grammars},
  year		= {1995},
  note		= {Submitted for publication},
  added		= {1996-03-13-10-09-20}
}

@Proceedings{	  Sleep-Plasmeijer-vanEekelen:93,
  title		= {Term Graph Rewriting. Theory and Practice},
  editor	= {Ronan Sleep and Rinus Plasmeijer and Marko {van Eekelen}},
  year		= {1993},
  publisher	= {John Wiley},
  address	= {Chichester},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Slisenko:82,
  author	= {A. O. Slisenko},
  title		= {Context-Free Graph Grammars as a Tool for Describing
		  Polynomial-time Subclasses of Hard Problems},
  journal	= {Information Processing Letters},
  volume	= {14},
  pages		= {52--56},
  year		= {1982},
  added		= {1996-03-13-10-09-20}
}

@MastersThesis{	  Sobbe:95,
  author	= {Sobbe, G.},
  title		= {{Modellierung und Generierung von
		  Softwareentwickluingsumgebungen mit Graphgrammatiken}},
  year		= {1995},
  address	= {RWTH Aachen},
  type		= {Diplomarbeit},
  school	= {Lehrstuhl f{\"u}r Informatik III},
  added		= {1996-11-28-18-33-07}
}

@Article{	  Solms:84,
  author	= {S. H. von Solms},
  title		= {Node-Label Controlled Graph Grammars with Context
		  Conditions},
  journal	= {Int. Journal of Computer Mathematics},
  volume	= {15},
  pages		= {39--49},
  year		= {1984},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Sopena:87,
  author	= {Eric Sopena},
  title		= {Combinatorial Hypermap Rewriting},
  editor	= {P. Lescanne},
  booktitle	= {Rewriting Techniques and Applications},
  series	= {Lecture Notes in Computer Science},
  volume	= {256},
  pages		= {62--73},
  year		= {1987},
  note		= {To appear in Theoretical Computer Science},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Sowa:79,
  author	= {J. F. Sowa},
  title		= {Definitional Mechanisms for Conceptual Graphs},
  editor	= {V. Claus and H. Ehrig and G. Rozenberg},
  booktitle	= {Graph-Grammars and Their Application to Computer Science
		  and Biology},
  series	= {Lecture Notes in Computer Science},
  volume	= {73},
  pages		= {426--439},
  year		= {1979},
  added		= {1996-03-13-10-09-20}
}

@Book{		  Sowa:84,
  author	= {J. F. Sowa},
  title		= {Conceptual Structures: Information Processing in Minds and
		  Machines},
  year		= {1984},
  publisher	= {Addison-Wesley},
  address	= {Reading, Mass.},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Sowa:87,
  author	= {J. F. Sowa},
  title		= {Semantic Networks},
  editor	= {S. C. Shapiro},
  booktitle	= {Encyclopedia of Artificial Intelligence 2},
  year		= {1987},
  publisher	= {John Wiley \& Sons},
  address	= {New York},
  added		= {1996-03-13-10-09-20}
}

@MastersThesis{	  Speulmanns:95,
  author	= {Speulmanns, A.},
  title		= {{Visuelles Programmieren mit Graphersetzungsregeln}},
  year		= {1995},
  address	= {RWTH Aachen},
  type		= {Diplomarbeit},
  school	= {Lehrstuhl f{\"u}r Informatik III},
  added		= {1996-11-28-18-33-07},
  subtitle	= {Integration neuer Konzepte in PROGRES}
}

@MastersThesis{	  Spielmann:89,
  author	= {Spielmann, R.},
  title		= {{Entwicklung einer Basisschicht zur
		  Graphgrammatikinterpretation}},
  year		= {1989},
  address	= {RWTH Aachen},
  type		= {Diplomarbeit},
  school	= {Lehrstuhl f{\"u}r Informatik III},
  added		= {1996-11-28-18-33-07}
}

@Article{	  Staples:80,
  author	= {J. Staples},
  title		= {Computation on Graph-Like Expressions},
  journal	= {Theoretical Computer Science},
  volume	= {10},
  pages		= {171--185},
  year		= {1980},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Staples:80b,
  author	= {J. Staples},
  title		= {Optimal Evaluations of Graph-Like Expressions},
  journal	= {Theoretical Computer Science},
  volume	= {10},
  pages		= {297--316},
  year		= {1980},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Staples:80c,
  author	= {J. Staples},
  title		= {Speeding up Subtree Replacement Systems},
  journal	= {Theoretical Computer Science},
  volume	= {11},
  pages		= {39--47},
  year		= {1980},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Staples:83,
  author	= {J. Staples},
  title		= {Two-level expression represntation for faster evaluation},
  editor	= {H. Ehrig and M. Nagl and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science,
		  2nd International Workshop, Haus Ohrbeck, Germany},
  series	= {Lecture Notes in Computer Sciences},
  number	= {153},
  pages		= {392--404},
  year		= {1983},
  publisher	= {Spinger-Verlag},
  added		= {1996-04-16-07-34-15}
}

@Article{	  Syslo:79,
  author	= {Maciej M. Syslo},
  title		= {Characterization of Outerplanar Graphs},
  journal	= {Discrete Mathematics},
  volume	= {26},
  pages		= {47--53},
  year		= {1979},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Syslo:82,
  author	= {Maciej M. Syslo},
  title		= {The Subgraph Isomorphism Problem for Outerplanar Graphs},
  journal	= {Theoretical Computer Science},
  volume	= {17},
  pages		= {91--97},
  year		= {1982},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Syslo:83,
  author	= {Maciej M. Syslo},
  title		= {{NP}-Complete Problems on Some Tree-Structured Graphs: {A}
		  Review},
  editor	= {M. Nagl and J. Perl},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  pages		= {342--353},
  year		= {1983},
  publisher	= {Trauner Verlag},
  address	= {Linz},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Taentzer-Beyer:94,
  author	= {Gabriele Taentzer and Martin Beyer},
  title		= {Amalgamated Graph Transformations and Their Use for
		  Specifying {AGG} --- an Algebraic Graph Grammar System},
  editor	= {Hans J{\"u}rgen Schneider and Hartmut Ehrig},
  booktitle	= {Graph Transformations in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {776},
  pages		= {380--394},
  year		= {1994},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Taentzer:95,
  author	= {Gabriele Taentzer},
  title		= {Parallel High-Level Replacement Systems},
  journal	= {Theoretical Computer Science},
  year		= {1995},
  note		= {To appear},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Taentzer:96,
  author	= {Gabriele Taentzer},
  title		= {Towards Synchronous and Asynchronous Graph
		  Transformations},
  journal	= {Fundamenta Informaticae},
  year		= {1996},
  note		= {To appear},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Taentzer:96b,
  author	= {Taentzer, Gabriele},
  title		= {Hierarchically Distributed Graph Transformations},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {304--320},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@PhDThesis{	  Taentzer:96c,
  author	= {Taentzer, G.},
  title		= {Parallel and Distributed Graph Transformation: Formal
		  Description and Application to Communication-Based
		  Systems},
  year		= {1996},
  school	= {TU Berlin},
  note		= {Shaker Verlag},
  added		= {1998-01-22-10-35-50},
  creatorofitem	= {gabi-960925}
}

@Article{	  Taentzer:97,
  author	= {Taentzer, G.},
  title		= {Distributed Graphs and Graph Transformation},
  journal	= {Applied categorical Structures},
  year		= {1997},
  note		= {Submitted},
  added		= {1998-01-22-10-35-50},
  creatorofitem	= {gabi-970122}
}

@Article{	  Takamizawa-Nishizeki-Saito:82,
  author	= {K. Takamizawa and T. Nishizeki and N. Saito},
  title		= {Linear-Time Computability Problems on Series-Parallel
		  Graphs},
  journal	= {Journal of the ACM},
  volume	= {29},
  number	= {3},
  pages		= {623--641},
  year		= {1982},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Taubenberger:94,
  author	= {Stefan Taubenberger},
  title		= {Correct Translations of Generalized Iterated Function
		  Systems to Collage Grammars},
  number	= {7/94},
  year		= {1994},
  institution	= {Bremen},
  type		= {Technical Report},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Turan:83,
  author	= {G. Tur\'an},
  title		= {On the Complexity of Graph Grammars},
  journal	= {Acta Cybern.},
  volume	= {6},
  pages		= {271--281},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Uesu:78,
  author	= {Tadahiro Uesu},
  title		= {A System of Graph Grammars which Generates all Recursively
		  Enumerable Sets of Labelled Graphs},
  journal	= {Tsukuba J. Math.},
  volume	= {2},
  pages		= {11--26},
  year		= {1978},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Van-Hentenrynck:89,
  author	= {Van Hentenrynck, P.},
  title		= {Constraint satisfaction in logic programming},
  year		= {1989},
  publisher	= {MIT press},
  added		= {1996-08-02-14-49-29}
}

@Article{	  Vere:77,
  author	= {S. A. Vere},
  title		= {Relational Production Systems},
  journal	= {Artificial Intelligence},
  volume	= {8},
  pages		= {47--68},
  year		= {1977},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Vogler:90,
  author	= {Walter Vogler},
  title		= {On Hyperedge Replacement and {BNLC} Graph Grammars},
  editor	= {M. Nagl},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {411},
  pages		= {78--93},
  year		= {1990},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Vogler:91,
  author	= {Walter Vogler},
  title		= {Recognizing Edge Replacement Graph Languages in Cubic
		  Time},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Proc. Fourth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {676--687},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Vogler:93,
  author	= {Walter Vogler},
  title		= {On Hyperedge Replacement and {BNLC} Graph Grammars},
  journal	= {Discrete Applied Mathematics},
  volume	= {46},
  pages		= {253--273},
  year		= {1993},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Wald-Colbourn:83,
  author	= {J. Wald and C. Colbourn},
  title		= {Steiner Trees, Partial 2-Trees, and Minimum {IFI}
		  Networks},
  journal	= {Networks},
  volume	= {13},
  pages		= {159--167},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Wanke-Skodinis:96,
  author	= {Wanke, Egon and Skodinis, Kostantin},
  title		= {The Bounded Degree Problem for Non-Obstructing {eNCE}
		  Graph Grammars},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {211--224},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@Article{	  Wanke-Wiegers:89,
  author	= {Egon Wanke and Manfred Wiegers},
  title		= {Undecidability of the Bandwidth Problem on Linear Graph
		  Languages},
  journal	= {Information Processing Letters},
  volume	= {33},
  pages		= {193--197},
  year		= {1989},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Wanke:88,
  author	= {Egon Wanke},
  title		= {{PLEXUS}: {A} System for Implementing Hierarchical Graph
		  Algorithms},
  editor	= {R. Cori and M. Wirsing},
  booktitle	= {STACS'88},
  series	= {Lecture Notes in Computer Science},
  volume	= {294},
  pages		= {403--404},
  year		= {1988},
  added		= {1996-03-13-10-09-20}
}

@PhDThesis{	  Wanke:89,
  author	= {Egon Wanke},
  title		= {Algorithmen und Komplexit{\"a}tsanalyse f{\"u}r die
		  Verarbeitung hierarchisch definierter Graphen und
		  hierarchisch definierter Graphfamilien},
  year		= {1989},
  school	= {Paderborn},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Wanke:91,
  author	= {Egon Wanke},
  title		= {Algorithms for Graph Problems on {BNLC} Structured
		  Graphs},
  journal	= {Information and Computation},
  volume	= {94},
  pages		= {93--122},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Wanke:91b,
  author	= {Egon Wanke},
  title		= {On the Decidability of Integer Subgraph Problems on
		  Context-Free Graph Languages},
  editor	= {L. Budach},
  booktitle	= {Proc.\ Fundamentals of Computation Theory},
  series	= {Lecture Notes in Computer Science},
  volume	= {529},
  pages		= {415--426},
  year		= {1991},
  publisher	= {Springer},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Wanke:91c,
  author	= {Egon Wanke},
  title		= {{PLEXUS}: Tools for Analyzing Graph Grammars},
  editor	= {H. Ehrig and H.-J. Kreowski and G. Rozenberg},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {532},
  pages		= {68--69},
  year		= {1991},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Wanke:94,
  author	= {Egon Wanke},
  title		= {On the Decidability of Certain Integer Subgraph Problems
		  on Context-Free Graph Languages},
  journal	= {Information and Computation},
  volume	= {113},
  pages		= {26--49},
  year		= {1994},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Wanke:94b,
  author	= {Egon Wanke},
  title		= {The Complexity of Connectivity Problems on Context-Free
		  Graph Languages},
  journal	= {Journal of Computer and System Sciences},
  volume	= {49},
  pages		= {57--82},
  year		= {1994},
  added		= {1996-03-13-10-09-20}
}

@PhDThesis{	  Wankmueller:82,
  author	= {Frank Wankm{\"u}ller},
  title		= {Charakterisierung von Graphklassen durch verbotene
		  Strukturen und Reduktionen},
  year		= {1982},
  school	= {Dortmund},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Wankmueller:83,
  author	= {Frank Wankm{\"u}ller},
  title		= {Characterization of Graph Classes by Forbidden Structures
		  and Reductions},
  journal	= {Lecture Notes in Computer Science},
  volume	= {153},
  pages		= {405--414},
  year		= {1983},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Wankmueller:87,
  author	= {Frank Wankm{\"u}ller},
  title		= {Applications of Graph Grammars in Music Composing
		  Systems},
  journal	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {580--592},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@InCollection{	  Welzl:86,
  author	= {Emo Welzl},
  title		= {On the Set of all Subgraphs of the Graphs in a Boundary
		  {NLC} Graph Language},
  editor	= {G. Rozenberg and A. Salomaa},
  booktitle	= {The Book of L},
  pages		= {445--459},
  year		= {1986},
  publisher	= {Springer-Verlag},
  address	= {Berlin},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Welzl:87,
  author	= {Emo Welzl},
  title		= {Boundary {NLC} and Partition Controlled Graph Grammars},
  journal	= {Lecture Notes in Computer Science},
  volume	= {291},
  pages		= {593--609},
  year		= {1987},
  added		= {1996-03-13-10-09-20}
}

@Book{		  Westfechtel:91,
  author	= {B. Westfechtel},
  title		= {Revisions- und Konsistenzkontrolle in einer integrierten
		  Softwareentwicklungsumgebung},
  series	= {Informatik-Fachberichte},
  volume	= {280},
  year		= {1991},
  publisher	= {Springer-Verlag},
  address	= {Berlin},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Westfechtel:94,
  author	= {B. Westfechtel},
  title		= {Using Programmed Graph Rewriting for the Formal
		  Specification of a Configuration Management System},
  editor	= {G. Tinhofer},
  booktitle	= {Proceedings WG' 94 Workshop on Graph-Theoretic Concepts in
		  Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {903},
  pages		= {164--179},
  year		= {1994},
  publisher	= {Springer-Verlag},
  added		= {1996-08-02-14-49-29}
}

@Article{	  Westfechtel:96,
  author	= {B. Westfechtel},
  title		= {Integrated Product and Process Management for Engineering
		  Design Applications},
  journal	= {Integrated Computer-Aided Engineering},
  volume	= {3},
  number	= {1},
  year		= {1996},
  publisher	= {Wiley},
  added		= {1996-08-02-14-49-29}
}

@Article{	  Whitney:32,
  author	= {H. Whitney},
  title		= {Congruent Graphs and the Connectivity of Graphs},
  journal	= {American Journal of Mathematics},
  volume	= {54},
  pages		= {150--168},
  year		= {1932},
  added		= {1996-03-28-11-35-01}
}

@TechReport{	  Wilharm:81,
  author	= {Anne Wilharm},
  title		= {{Anwendung der Theorie von Graphgrammatiken auf die
		  Spezifikation der Prozess-Steuerung von
		  Eisenbahnsystemen}},
  number	= {81-15},
  year		= {1981},
  institution	= {Berlin},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Wills:96,
  author	= {Wills, Linda Mary},
  title		= {Using Attributed Flow Graph Parsing to Recognize
		  Clich{\'e}s in Programs},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {170--184},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@Manual{	  Winter,
  author	= {A. J. Winter},
  title		= {{G}uided {P}rototype {G}eneration},
  organization	= {{RWTH} Aachen},
  address	= {D-52056 Aachen, Germany},
  added		= {1996-04-16-07-34-15}
}

@Article{	  Woods:70,
  author	= {W. A. Woods},
  title		= {Transition Network Grammars for Natural Language
		  Analysis},
  journal	= {Comm. ACM},
  volume	= {13},
  number	= {10},
  pages		= {591--606},
  year		= {1970},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Wu-Rosenfeld:79,
  author	= {A. Wu and Azriel Rosenfeld},
  title		= {Cellular Graph Automata},
  journal	= {Lecture Notes in Computer Science},
  volume	= {73},
  pages		= {464--475},
  year		= {1979},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Wu-Rosenfeld:79b,
  author	= {A. Wu and Azriel Rosenfeld},
  title		= {Cellular Graph Automata {I}},
  journal	= {Information and Control},
  volume	= {42},
  pages		= {305--329},
  year		= {1979},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Wu-Rosenfeld:79c,
  author	= {A. Wu and Azriel Rosenfeld},
  title		= {Cellular Graph Automata {II}},
  journal	= {Information and Control},
  volume	= {42},
  pages		= {330--353},
  year		= {1979},
  added		= {1996-03-13-10-09-20}
}

@Article{	  Wu-Rosenfeld:80,
  author	= {A. Wu and Azriel Rosenfeld},
  title		= {Sequential and Cellular Graph Automata},
  journal	= {Information Sciences},
  volume	= {20},
  pages		= {57--68},
  year		= {1980},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Zinssmeister-McCreary:96,
  author	= {Zin{\ss}meister, Gaby and McCreary, Carolyn},
  title		= {Drawing Graphs with Attribute Graph Grammars},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {443--453},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-08-02-16-55-34}
}

@InProceedings{	  Zuendorf-Schuerr:91,
  author	= {A. Z{\"u}ndorf and A. Sch{\"u}rr},
  title		= {Nondeterministic Control Structures for Graph Rewriting
		  Systems},
  editor	= {G. Schmidt and R. Berghammer},
  booktitle	= {Graph-Theoric Concepts in Computer Science, 17th
		  International Workshop, WG'91, Fishbachau, Germany},
  series	= {Lecture Notes in Computer Science},
  number	= {643},
  pages		= {48--62},
  year		= {1991},
  publisher	= {Springer-Verlag},
  added		= {1996-04-16-07-34-15}
}

@TechReport{	  Zuendorf-Schuerr:91b,
  author	= {A. Z{\"u}ndorf and A. Sch{\"u}rr},
  title		= {Nondeterministic Control Structures for Graph Rewriting
		  Systems},
  number	= {91-17},
  year		= {1991},
  institution	= {Lehrstuhl fur Informatik III, Aachen University of
		  Technology, Germany},
  added		= {1996-04-16-07-34-15}
}

@InProceedings{	  Zuendorf-Schuerr:92,
  ATTENTION	= {newer record added: Apr 16, 1996},
  author	= {Albert Z{\"u}ndorf and Andy Sch{\"u}rr},
  title		= {Nondeterministic Control Structures for Graph Rewriting
		  Systems},
  editor	= {G. Schmidt and R. Berghammer},
  booktitle	= {Graph-Theoretic Concepts in Computer Science},
  series	= {Lecture Notes in Computer Science},
  volume	= {570},
  pages		= {48--62},
  year		= {1992},
  added		= {1996-03-13-10-09-20}
}

@TechReport{	  Zuendorf:92,
  author	= {A. Z{\"u}ndorf},
  title		= {Implementation of the imperative / rule based language
		  {PROGRES}},
  number	= {92-38},
  year		= {1992},
  institution	= {Department of computer science III, Aachen University of
		  Technology, Germany},
  added		= {1996-04-16-07-34-15}
}

@TechReport{	  Zuendorf:93,
  author	= {A. Z{\"u}ndorf},
  title		= {A Heuristique for the Subgraph Isomorphism Problem in
		  Executing {PROGRES}},
  number	= {93-05},
  year		= {1993},
  institution	= {Department of Computer Science III, Aachen University of
		  Technology},
  added		= {1996-04-16-07-34-15}
}

@PhDThesis{	  Zuendorf:95,
  ATTENTION	= {newer record added: Nov 28, 1996},
  author	= {Albert Z{\"u}ndorf},
  title		= {{Eine Entwicklungsumgebung f\"ur PROgrammierte
		  GRaphErsetzungsSysteme}},
  year		= {1995},
  school	= {RWTH Aachen, Germany},
  added		= {1996-03-13-10-09-20}
}

@Book{		  Zuendorf:95b,
  ATTENTION	= {newer record added: Aug 02, 1996},
  author	= {Albert Z{\"u}ndorf},
  title		= {{Eine Entwicklungsumgebung f\"ur PROgrammierte
		  GRaphErsetzungsSysteme}},
  year		= {1995},
  publisher	= {Deutscher Universit{\"a}tsverlag},
  address	= {Wiesbaden},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Zuendorf:96,
  ATTENTION	= {newer record added: Jul 30, 1996},
  author	= {Albert Z{\"u}ndorf},
  title		= {Graph Pattern Matching in {PROGRES}},
  booktitle	= {Graph Grammars and Their Application to Computer Science},
  series	= {Lecture Notes in Computer Science},
  year		= {1996},
  note		= {To appear},
  added		= {1996-03-13-10-09-20}
}

@InProceedings{	  Zuendorf:96b,
  author	= {Z{\"u}ndorf, Albert},
  title		= {Graph Pattern Matching in {PROGRES}},
  editor	= {J. Cuny and H. Ehrig and G. Engels and G. Rozenberg},
  booktitle	= {Proc. Fifth Intl. Workshop on Graph Grammars and Their
		  Application to Comp. Sci.},
  series	= {Lecture Notes in Computer Science},
  volume	= {1073},
  pages		= {454--468},
  year		= {1996},
  publisher	= {Springer},
  added		= {1996-07-30-13-31-20}
}

@Book{		  Zuendorf:96c,
  author	= {A. Z{\"u}ndorf},
  title		= {{Eine Entwicklungsumgebung f{\"u}r programmierte
		  Graphersetzungssysteme}},
  year		= {1996},
  publisher	= {Deutscher Universit{\"a}tsverlag},
  address	= {Wiesbaden},
  note		= {Dissertation, RWTH Aachen},
  added		= {1996-08-02-14-49-29}
}