Heckel, Reiko. “Modeling Agent-Based Systems with Graph Transformation and UML.” In Proceedings of the Dagstuhl-Seminar 99451 on Rigorous Analysis and Design for Software Intensive Systems, 1999.
LibreCat: /record/7859

Sauer, Stefan, and Gregor Engels. “Extending UML for Modeling of Multimedia Applications.”http://doi.ieeecomputersociety.org/10.1109/VL.1999.795878__In Proceedings of the IEEE Symposium on Visual Languages (VL 1999), Tokyo (Japan), 80–87. Tokyo, Japan: IEEE Computer Society, 1999.http://doi.ieeecomputersociety.org/10.1109/VL.1999.795878 .
LibreCat: /record/7860
DOI: http://doi.ieeecomputersociety.org/10.1109/VL.1999.795878

Ehrig, Hartmut, Reiko Heckel, Mercé Llabrés, and Fernando Orejas. Basic Properties of Double Pullback Graph Transitions. Technical University of Berlin, 1999.
LibreCat: /record/8203

Engels, Gregor, Roland Hücking, Stefan Sauer, and Annika Wagner. UML Collaboration Diagrams and Their Transformation to Java. University of Paderborn, Department of Computer Science, 1999.
LibreCat: /record/8204

Engels, Gregor, Pieter Jan t’Hoen, Ray Dassen, Luuk Groenewegen, Ida G. Sprinkhuizen-Kuyper, and Pieter Koopman. SOCCA Extended with UML like Packages. Leiden Institute of Advanced Computer Science, 1999.
LibreCat: /record/8205

Engels, Gregor, Ray Dassen, Luuk Groenewegen, Ida G. Sprinkhuizen-Kuyper, Pieter Koopman, and Pieter Jan t’Hoen. A Formalisation of SOCCA Using Z, Part 1: The Type Level Concepts. Leiden Institute of Advanced Computer Science, 1999.
LibreCat: /record/8206

Sauer, Stefan, and Gregor Engels. “UML-Basierte Modellierung von Multimediaanwendungen.” In Modellierung 1999, Workshop Der Gesellschaft Für Informatik e. V. (GI), März 1999 in Karlsruhe, 155–70. Karlsruhe, Germany: Teubner, Stuttgart, 1999.
LibreCat: /record/8321

Sauer, Stefan, and Gregor Engels. “OMMMA: An Object-Oriented Approach for Modeling Multimedia Information Systems.” In Proceedings of the Workshop on Multimedia Information Systems (MIS 1999), Indian Wells, CA (USA), 64–71. Indian Wells, California, USA, 1999.
LibreCat: /record/8322

Corradini, Andrea, Martin Große-Rhode, and Reiko Heckel. “An Algebra of Graph Derivations Using Finite (Co-) Limit Double Theories.”http://dx.doi.org/10.1007/3-540-48483-3_7__In Selected Papers of the 13th International Workshop on Recent Trends in Algebraic Development Techniques (WADT 1998), Lisbon (Portugal), 1589:92–106. LNCS. Berlin/Heidelberg: Springer, 1999.http://dx.doi.org/10.1007/3-540-48483-3_7 .
LibreCat: /record/8323
DOI: http://dx.doi.org/10.1007/3-540-48483-3_7

Corradini, Andrea, Reiko Heckel, and Ugo Montanari. “From SOS Specifications to Structured Coalgebras: How to Make Bisimulation a Congruence.”http://dx.doi.org/10.1016/S1571-0661(05)80273-7__In Proceedings of the 2nd Workshop on Coalgebraic Methods in Computer Science (CMCS 99), 19:118–41. Electronic Notes in TCS. Amsterdam, The Netherlands: Elsevier, 1999.http://dx.doi.org/10.1016/S1571-0661(05)80273-7 .
LibreCat: /record/8324
DOI: http://dx.doi.org/10.1016/S1571-0661(05)80273-7

Engels, Gregor, Reiko Heckel, and Stefan Sauer. “Dynamic Meta Modelling: A Graphical Approach to Operational Semantics.” In Proceedings of the Workshop on Rigorous Modeling and Analysis with the UML: Challenges and Limitations (Satellite Event of the Conference on Onject-Oriented Programming, Systems, Languages, and Applications (OOPSLA 1999)), Denver, CO (USA), 1999.
LibreCat: /record/8325

Engels, Gregor, and Stefan Sauer. “MVC-Based Modeling Support for Embedded Real-Time Systems.” In Proceedings of OMER Workshop, Herrsching, Germany, 11–14. Herrsching, Universität der Bundeswehr München, Fakultät für Informatik, 1999.
LibreCat: /record/8326

Mehner, Katharina, and Annika Wagner. “An Assessment of Aspect Language Design.” In Proceedings of the Young Researchers Workshop (Satellite Event of the Generative and Component-Based Software Engineering (GCSE 1999)), Erfurt (Germany), 1999.
LibreCat: /record/8327

Mehner, Katharina, and Annika Wagner. “On the Role of Method Families in Aspect Oriented Programming.” In Proceedings of the ECOOP Workshop on Aspect Oriented Programming, Lisboa (Spain), 1743:305–6. LNCS. Berlin/Heidelberg: Springer, 1999.
LibreCat: /record/8328

Depke, Ralph, Gregor Engels, Katharina Mehner, Stefan Sauer, and Annika Wagner. “Ein Vorgehensmodell Für Die Multimedia-Entwicklung Mit Autorensystemen.”http://dx.doi.org/10.1007/s004500050128__Informatik Forschung Und Entwicklung 14, no. 2 (1999): 83–94.http://dx.doi.org/10.1007/s004500050128 .
LibreCat: /record/7399
DOI: http://dx.doi.org/10.1007/s004500050128

Cherchago, Alexey, and V. Finaev. “Formalization of the Development Process for a Software-Hardware Reflexodiagnostic Tool.” Scientific Bulletin of Academy of Information Technologies in Education, Science and Balneology 3 (1999).
LibreCat: /record/7400

Andries, Marc, Gregor Engels, Annegret Habel, Berthold Hoffmann, Hans-Jörg Kreowski, Sabine Kuske, Detlef Plump, Andy Schürr, and Gabriele Taentzer. “Graph Transformation for Specification and Programming.”http://dx.doi.org/10.1016/S0167-6423(98)00023-9__Science of Computer Programming 34, no. 1 (1999): 1–54.http://dx.doi.org/10.1016/S0167-6423(98)00023-9 .
LibreCat: /record/7401
DOI: http://dx.doi.org/10.1016/S0167-6423(98)00023-9

Ehrig, Hartmut, Gregor Engels, Hans Jörg Kreowski, and Grzegorz Rozenberg. Handbook of Graph Grammars and Computing by Graph Transformation: Vol. 2: Applications, Languages, and Tools. River Edge, NJ, USA: World Scientific Publishing Co., Inc., 1999.
LibreCat: /record/7510

Heckel, Reiko, Gregor Engels, Hartmut Ehrig, and Gabriele Taentzer. “A View-Based Approach to System Modeling Based on Open Graph Transformation Systems.” In Handbook of Graph Grammars and Computing by Graph Transformations, Volume 2: Applications, Languages and Tools, 639–68. Singapore: World Scientific, 1999.
LibreCat: /record/7518

Heckel, Reiko, Gregor Engels, Hartmut Ehrig, and Gabriele Taentzer. “Classification and Comparison of Module Concepts for Graph Transformation Systems.” In Handbook of Graph Grammars and Computing by Graph Transformations, Volume 2: Applications, Languages and Tools, 2:669–89. Singapore: World Scientific, 1999.
LibreCat: /record/7519