@inproceedingsGadducci_Heckel_Llabrés_1999, series=Electronic Notes in Theoretical Computer Science, title=A Bi-Categorical Axiomatisation of Concurrent Graph Rewriting, volume=29, DOI=http://dx.doi.org/10.1016/S1571-0661(05)80309-3, booktitle=Proceedings of the 8th Conference on Category Theory and Computer Science (CTCS 1999), Edinburgh (UK), publisher=Elsevier, author=Gadducci, Fabio and Heckel, Reiko and Llabrés, Mercé, year=1999, pages=80–100, collection=Electronic Notes in Theoretical Computer Science 

@inproceedingsHeckel_1999, title=Modeling Agent-Based Systems with Graph Transformation and UML, number=258, booktitle=Proceedings of the Dagstuhl-Seminar 99451 on Rigorous Analysis and Design for Software Intensive Systems, author=Heckel, Reiko, year=1999 

@inproceedingsSauer_Engels_1999, place=Tokyo, Japan, title=Extending UML for Modeling of Multimedia Applications, DOI=http://doi.ieeecomputersociety.org/10.1109/VL.1999.795878, booktitle=Proceedings of the IEEE Symposium on Visual Languages (VL 1999), Tokyo (Japan), publisher=IEEE Computer Society, author=Sauer, Stefan and Engels, Gregor, year=1999, pages=80–87 

@inproceedingsSalhi_Krauter_Lemoine_Triebel_Schroer_Araújo_1999, title=Combined Photovoltaic and Solar Thermal Systems for Facade Integration and Building Insulation, booktitle=Proceedings of the ISES Solar World Congress, Jerusalem (Israel), .4.–9. Juli 1999, II-88., author=Salhi, M. J. and Krauter, Stefan and Lemoine, R. and Triebel, C. and Schroer, S. and Araújo, R. G., year=1999 

@inproceedingsKrauter_Stephan_Bastos_1999, title=Set-up of a Laboratory for Research and Education in Solar Energy in Rio de Janeiro, booktitle=Proceedings of the ISES Solar World Congress, Jerusalem (Israel), 4.–9. Juli 1999, S. II-288, author=Krauter, Stefan and Stephan, R. and Bastos, L., year=1999 

@inproceedingsKrauter_Schmid_1999, title=Cooling and Less Reflections at Photovoltaic Modules by a Frontside Water Film., booktitle=Proceedings of the ISES Solar World Congress, Jerusalem (Israel), 4.–9. Juli 1999,, author=Krauter, Stefan and Schmid, U., year=1999 

@inproceedingsKrauter_1999, title=The Use of Solar Energy: Considerations for Calculations of Greenhouse Gas Reduction by Photovoltaics, booktitle=Proceedings of the ISES Solar World Congress, Jerusalem (Israel), 4.–9. Juli 1999, II-375., author=Krauter, Stefan, year=1999 

@inproceedingsKrauter_Schmid_1999, title=Optical and Thermal Improvements of PV Performance by a Flowing Film of Water at the Frontside of PV Generators. , booktitle=Proceedings of the 9th Sede Boquer Symposium on Solar Electricity Production, Sede Boquer (Israel), 12.–13. Juli 1999, S. 123–126, author=Krauter, Stefan and Schmid, U., year=1999 

@inproceedingsKrauter_1999, title=Híbridos Termo/Solares Fotovoltaicos (Combined Solar–Thermal/Photovoltaic Systems), booktitle=Proceedings of Workshop Energias Alternativas para Produção de Calor, Frio e Geração e Conservação de Energia Elétrica, UFSC, Florianópolis, Santa Catarina (Brasilien), 6.–9. Dezember 1999, author=Krauter, Stefan, year=1999 

@articleKrauter_Araujo_Schroer_Salhi_Triebel_Hanitsch_1999, title=Combined PV and Solar Thermal Systems for Facade Integration and Building Insulation, volume=67, number=4–6, journal=Solar Energy, author=Krauter, Stefan and Araujo, G. and Schroer, S. and Salhi, M. and Triebel, C. and Hanitsch, Rolf, year=1999, pages=239–248 

@bookEhrig_Heckel_Llabrés_Orejas_1999, title=Basic Properties of Double Pullback Graph Transitions, publisher=Technical University of Berlin, author=Ehrig, Hartmut and Heckel, Reiko and Llabrés, Mercé and Orejas, Fernando, year=1999 

@bookEngels_Hücking_Sauer_Wagner_1999, title=UML Collaboration Diagrams and Their Transformation to Java, publisher=University of Paderborn, Department of Computer Science, author=Engels, Gregor and Hücking, Roland and Sauer, Stefan and Wagner, Annika, year=1999 

@bookEngels_Jan t’Hoen_Dassen_Groenewegen_G. Sprinkhuizen-Kuyper_Koopman_1999, title=SOCCA Extended with UML like Packages, publisher=Leiden Institute of Advanced Computer Science, author=Engels, Gregor and Jan t’Hoen, Pieter and Dassen, Ray and Groenewegen, Luuk and G. Sprinkhuizen-Kuyper, Ida and Koopman, Pieter, year=1999, pages=99–06 

@bookEngels_Dassen_Groenewegen_G. Sprinkhuizen-Kuyper_Koopman_Jan t’Hoen_1999, title=A Formalisation of SOCCA using Z, part 1: The Type Level Concepts, publisher=Leiden Institute of Advanced Computer Science, author=Engels, Gregor and Dassen, Ray and Groenewegen, Luuk and G. Sprinkhuizen-Kuyper, Ida and Koopman, Pieter and Jan t’Hoen, Pieter, year=1999 

@inproceedingsSauer_Engels_1999, place=Karlsruhe, Germany, title=UML-basierte Modellierung von Multimediaanwendungen, booktitle=Modellierung 1999, Workshop der Gesellschaft für Informatik e. V. (GI), März 1999 in Karlsruhe, publisher=Teubner, Stuttgart, author=Sauer, Stefan and Engels, Gregor, year=1999, pages=155–170 

@inproceedingsSauer_Engels_1999, place=Indian Wells, California, USA, title=OMMMA: An Object-Oriented Approach for Modeling Multimedia Information Systems, booktitle=Proceedings of the workshop on Multimedia Information Systems (MIS 1999), Indian Wells, CA (USA), author=Sauer, Stefan and Engels, Gregor, year=1999, pages=64–71 

@inproceedingsCorradini_Große-Rhode_Heckel_1999, place=Berlin/Heidelberg, series=LNCS, title=An Algebra of Graph Derivations using Finite (co-) limit Double Theories, volume=1589, DOI=http://dx.doi.org/10.1007/3-540-48483-3_7, booktitle=Selected papers of the 13th International Workshop on Recent Trends in Algebraic Development Techniques (WADT 1998), Lisbon (Portugal), publisher=Springer, author=Corradini, Andrea and Große-Rhode, Martin and Heckel, Reiko, year=1999, pages=92–106, collection=LNCS 

@inproceedingsCorradini_Heckel_Montanari_1999, place=Amsterdam, The Netherlands, series=Electronic Notes in TCS, title=From SOS Specifications to Structured Coalgebras: How to Make Bisimulation a Congruence, volume=19, DOI=http://dx.doi.org/10.1016/S1571-0661(05)80273-7, booktitle=Proceedings of the 2nd workshop on Coalgebraic Methods in Computer Science (CMCS 99), publisher=Elsevier, author=Corradini, Andrea and Heckel, Reiko and Montanari, Ugo, year=1999, pages=118–141, collection=Electronic Notes in TCS 

@inproceedingsEngels_Heckel_Sauer_1999, title=Dynamic Meta Modelling: A Graphical Approach to Operational Semantics, booktitle=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), author=Engels, Gregor and Heckel, Reiko and Sauer, Stefan, year=1999 

@inproceedingsEngels_Sauer_1999, place=Herrsching, Universität der Bundeswehr München, Fakultät für Informatik, title=MVC-Based Modeling Support for Embedded Real-Time Systems, number=01, booktitle=Proceedings of OMER Workshop, Herrsching, Germany, author=Engels, Gregor and Sauer, Stefan, year=1999, pages=11–14