Heckel, Reiko, Andrea Corradini, Hartmut Ehrig, and Michael Löwe. “Horizontal and Vertical Structuring of Typed Graph Transformation Systems.” Mathematical Structures in Computer Science 6, no. 6 (1996): 613–48.
LibreCat: /record/7405

Andries, Marc, and Gregor Engels. “A Hybrid Query Language for the Extended Entity Relationship Model.”http://dx.doi.org/10.1006/jvlc.1996.0017__Journal of Visual Languages and Computing 7, no. 3 (1996): 321–52.http://dx.doi.org/10.1006/jvlc.1996.0017 .
LibreCat: /record/7406
DOI: http://dx.doi.org/10.1006/jvlc.1996.0017

Engels, Gregor, Manfred Nagl, Wilhelm Schäfer, and Bernhard Westfechtel. “Tight Integration on One Document: The Programming Environment.” In Building Tightly Integrated Software Development Environments: The IPSEN Approach, 1170:170–77. LNCS. Berlin/Heidelberg: Springer, 1996.
LibreCat: /record/7514

Heckel, Reiko, Jürgen Müller, Gabriele Taentzer, and Annika Wagner. “Attributed Graph Transformations with Controlled Application of Rules.” In Proceedings of the Colloquium on Graph Transformation and Its Application in Computer Science. Technical Report. Universitat de les Illes Balears, 1995.
LibreCat: /record/7831

Thoben, Wilfried, Hans-Jürgen Appelrath, and Stefan Sauer. “Record Linkage of Anonymous Data by Control Numbers.” In Proceedings of the 18th Annual Conference of the Gesellschaft Für Klassifikation, Oldenburg (Germany), 412–19. Studies in Classification, Data Analysis, and Knowledge Organization. Berlin/Heidelberg: Springer, 1995.
LibreCat: /record/7832

Heckel, Reiko. “Embedding of Conditional Graph Transformations.” In Proceedings of the Colloquium on Graph Transformation and Its Application in Computer Science. Technical Report. Universitat de les Illes Balears, 1995.
LibreCat: /record/7833

Conrad, Mirko, Magdalena Gajewsky, Rainer Holl-Biniasz, Michael Rudolf, Jochen Demuth, Stephan Weber, Reiko Heckel, Jürgen Müller, Gabriele Taentzer, and Annika Wagner. Graphische Spezifikation Ausgewählter Teile von AGG - Einem Algebraischen Graphgrammatiksystem, 1995.
LibreCat: /record/8194

Ebert, Jürgen, and Gregor Engels. Specialization of Object Life Cycle Definitions. Koblenz: University of Koblenz-Landau, 1995.
LibreCat: /record/8195

Engels, Gregor, and Andy Schürr. Encapsulated Hierarchical Graphs, Graph Types, and Meta Types. Vakgroep Informatica, Rijksuniversiteit Leiden, 1995.
LibreCat: /record/8196

Groenewegen, Luuk, and Gregor Engels. “Coordination by Behavioural Views and Communication Patterns.”http://dx.doi.org/10.1007/3-540-59205-9_56__In Proceedings of the 4th European Workshop on Software Process Technology (EWSPT 1995), Noordwijkerhout (The Netherlands), 913:189–92. LNCS. Berlin/Heidelberg: Springer, 1995.http://dx.doi.org/10.1007/3-540-59205-9_56 .
LibreCat: /record/8266
DOI: http://dx.doi.org/10.1007/3-540-59205-9_56

Corradini, Andrea, and Reiko Heckel. “A Compositional Approach to Structuring and Refinement of Typed Graph Grammars.” In Proceedings of the Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph Rewriting and Computation (SEGRAGRA 1995), Volterra (Italy), 2:46–55. Electronic Notes in Theoretical Computer Science . Elsevier, 1995.
LibreCat: /record/8267

Bardohl, Bernhard, Roswitha Bardohl, Paulo Castro, Hartmut Ehrig, Reiko Heckel, Leila Ribeiro, Daltro Nunes, and Alfio Martini. “GRAPHIT: Graphical Support and Integration of Formal and Semiformal Methods for Software Specification and Development.” In Proceedings of the 3rd German-Brazilian Workshop on Information Technology (1995), Berlin (Germany), Vol. 26. Bilateral Seminars of the International Bureau. Forschungszentrum Jülich GmbH, 1995.
LibreCat: /record/8268

Engels, Gregor, and Andy Schürr. “Encapsulated Hierarchical Graphs, Graph Types, and Meta Types.”http://dx.doi.org/10.1016/S1571-0661(05)80186-0__In Proceedings of the Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph Rewriting and Computation (SEGRAGRA 1995), Volterra (Italy), 101–9. Electronic Notes in Theoretical Computer Science. Amsterdam, The Netherlands: Elsevier, 1995.http://dx.doi.org/10.1016/S1571-0661(05)80186-0 .
LibreCat: /record/8269
DOI: http://dx.doi.org/10.1016/S1571-0661(05)80186-0

Heckel, Reiko, and Annika Wagner. “Ensuring Consistency of Conditional Graph Grammars - A Constructive Approach.”http://dx.doi.org/10.1016/S1571-0661(05)80188-4__In Proceedings of the Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph Rewriting and Computation (SEGRAGRA 1995), Volterra (Italy), 2:118–26. Electronic Notes in Theoretical Computer Science. Elsevier, 1995.http://dx.doi.org/10.1016/S1571-0661(05)80188-4 .
LibreCat: /record/8270
DOI: http://dx.doi.org/10.1016/S1571-0661(05)80188-4

Ehrich, Hans-Dietrich, Gregor Engels, J. Paredaens, and Jan Wegner, eds. Fundamentals of Object-Oriented Languages, Systems, and Methods. Vol. 95. Dagstuhl-Seminar-Report. Schloss Dagstuhl, Leibniz Center for Informatics, 1994.
LibreCat: /record/7797

Cuny, Janice, Hartmut Ehrig, Gregor Engels, and Grzegorz Rozenberg, eds. Graph Gramars and Their Application to Computer Science, 5th International Workshop (1994), Selected Papers. Vol. 1073. LNCS. Berlin/Heidelberg: Springer, 1994.http://dx.doi.org/10.1007/3-540-61228-9 .
LibreCat: /record/7798
DOI: http://dx.doi.org/10.1007/3-540-61228-9

Thoben, Wilfried, Hans-Jürgen Appelrath, Jens Rettig, and Stefan Sauer. “Berücksichtigung von Datenschutzaspekten in Einem Bevölkerungsbezogenen Krebsregister.” In Proceedings of the Conference on Medizin Und Information, Biometrie Und Epidemiologie (GMDS 1994), Dresden (Germany), 88–90. München: MMV Medizin Verlag, 1994.
LibreCat: /record/7827

Ebert, Jürgen, and Gregor Engels. “Structural and Behavioural Views on OMT-Classes.” In Proceedings of the International Symposium on Object-Oriented Methodologies and Systems (ISOOMS 1994), Palermo (Italy), 858:142–57. Berlin/Heidelberg: Springer, 1994.
LibreCat: /record/7828

Engels, Gregor, and Gerti Kappel. “Object-Oriented System Development: Will the New Approach Solve Old Problems?” In Proceedings of the IFIP 13th World Computer Congress on Information Processing, Hamburg (Germany), 3:434–41. Elsevier, 1994.
LibreCat: /record/7829

Engels, Gregor, and Hartmut Ehrig. “Towards a Module Concept for Graph Transformation Systems: The Software Engineering Perspective.” In Proceedings Colloquium on Graph Transformation and Its Application in Computer Science, Vol. B-19. Technical Report . Universitat de les Illes Balears, Departament de Ci, 1994.
LibreCat: /record/7830

Ebert, Jürgen, and Gregor Engels. Observable or Invocable Behaviour - You Have to Choose. Vakgroep Informatica, Rijksuniversiteit Leiden, 1994.
LibreCat: /record/8193

Andries, Marc, and Gregor Engels. “Syntax and Semantics of Hybrid Database Languages.”http://dx.doi.org/10.1007/3-540-57787-4_2__In Proceedings of the International Workshop on Graph Transformations in Computer Science (1993), Dagstuhl (Germany), 776:19–36. LNCS. Berlin/Heidelberg: Springer, 1994.http://dx.doi.org/10.1007/3-540-57787-4_2 .
LibreCat: /record/8263
DOI: http://dx.doi.org/10.1007/3-540-57787-4_2

Engels, Gregor, and Luuk Groenewegen. “Specification of Coordinated Behaviour by SOCCA.”http://dx.doi.org/10.1007/3-540-57739-4_19__In Proceedings of the Third European Workshop on Software Process Technology (EWSPT 1994), Villard de Lans (France), 128–51. LNCS. Berlin/Heidelberg: Springer, 1994.http://dx.doi.org/10.1007/3-540-57739-4_19 .
LibreCat: /record/8264
DOI: http://dx.doi.org/10.1007/3-540-57739-4_19

Engels, Gregor, and Perdita Löhr. “Visual Specification of Complex Database Actions.” In Proceedings of the 2nd International East/West Database Workshop, Klagenfurt (Germany), 303–14. Berlin/Heidelberg: Springer, 1994.
LibreCat: /record/8265

Löhr-Richter, Perdita, and Gregor Engels. “Visuelles Spezifizieren von Komplexen Aktionen Auf Datenbankstrukturen.” GI-Datenbank Rundbrief 13 (1994): 33–35.
LibreCat: /record/7407

Ebert, Jürgen, and Gregor Engels. “Design Representation.” In Encyclopedia of Software Engineering, 382–94. John Wiley &; Sons, Inc., 1994.
LibreCat: /record/7512

Engels, Gregor, and Luuk Groenewegen. “SOCCA: Specifications of Coordinated and Cooperative Activities.” In Software Process Modelling and Technology, 71–102. Taunton: Research Studies Press, 1994.
LibreCat: /record/7513

Engels, Gregor, and A.A. Verrijn-Stuart. “Integrationsaspekte Bei Verteilter Software-Entwicklung.” In Fortschritt-Berichte VDI, 45–53. Reihe 10: Informatik/Kommunikationstechnik. VDI Verlag, 1993.
LibreCat: /record/7826

Andries, Marc, and Gregor Engels. A Hybrid Query Language for the Extended Entity Relationship Model. Vakgroep Informatica, Rijksuniversiteit Leiden, 1993.
LibreCat: /record/8190

Ehrig, Hartmut, and Gregor Engels. Towards a Module Concept for Graph Transformation Systems. Vakgroep Informatica, Rijksuniversiteit Leiden, 1993.
LibreCat: /record/8191

Engels, Gregor, and Grzegorz Rozenberg. Abstracts COMPUGRAPH II Workshop. Vakgroep Informatica, Rijksuniversiteit Leiden, 1993.
LibreCat: /record/8192

Engels, Gregor, and Luuk Groenewegen. “Modular, Visual Specifications of Software Processes.” In Proceedings of the Workshop on Software Process (ISPW 1993), Wadern (Germany), 66–68. Washington, DC, USA: IEEE Computer Society, 1993.
LibreCat: /record/8262

Koopman, Pieter, Luuk Groenewegen, and Gregor Engels. “Functional Description of Parallel Processes.” In Proceedings of the Conference SION Computing Science in the Netherlands (CSN ’92), The Netherlands, 156–67, 1992.
LibreCat: /record/7825

Engels, Gregor. Visual Specifications of Conceptual Database Schemata (Abstract). Leiden University, 1992.
LibreCat: /record/8189

Engels, Gregor, and Perdita Löhr-Richter. “CADDY: A Highly Integrated Environment to Support Conceptual Database Design.” In Proceedings of the Fifth International Workshop on Computer-Aided Software Engineering (CASE 1992), Montreal (Canada), 19–22. Washington, DC, USA: IEEE Computer Society, 1992.
LibreCat: /record/8260

Engels, Gregor, and Luuk Groenewegen. “Specification of Coordinated Behaviour in the Software Development Process.”http://dx.doi.org/10.1007/BFb0017495__In Proceedings of the Second European Workshop on Software Process Technology (EWSPT 92), Trondheim, Norway, 635:58–60. LNCS. Berlin/Heidelberg: Springer, 1992.http://dx.doi.org/10.1007/BFb0017495 .
LibreCat: /record/8261
DOI: http://dx.doi.org/10.1007/BFb0017495

Hohenstein, Uwe, and Gregor Engels. “SQL/EER - Syntax and Semantics of an Entity-Relationship-Based Query Language.”http://dx.doi.org/10.1016/0306-4379(92)90014-E__Information Systems 17, no. 3 (1992): 209–42.http://dx.doi.org/10.1016/0306-4379(92)90014-E .
LibreCat: /record/7408
DOI: http://dx.doi.org/10.1016/0306-4379(92)90014-E

Engels, Gregor, Claus Lewerentz, Manfred Nagl, Wilhelm Schäfer, and Andy Schürr. “Building Integrated Software Development Environments, Part I: Tool Specification.” ACM Transactions on Software Engineering and Methodology (TOSEM) 1, no. 2 (1992): 135–67.
LibreCat: /record/7409

Engels, Gregor, Martin Gogolla, Uwe Hohenstein, Klaus Hülsmann, Perdita Löhr-Richter, Gunter Saake, and Hans-Dietrich Ehrich. “Conceptual Modelling of Database Applications Using an Extended ER Model.”http://dx.doi.org/10.1016/0169-023X(92)90008-Y__Data &; Knowledge Engineering 9, no. 2 (1992): 157–204.http://dx.doi.org/10.1016/0169-023X(92)90008-Y .
LibreCat: /record/7410
DOI: http://dx.doi.org/10.1016/0169-023X(92)90008-Y

Löhr-Richter, Perdita, and Gregor Engels. Incremental Design of Conceptual Database Schemata with CADDY. Leiden University, P.O. Box 9500, 2300 RA Leiden, The Netherlands: Leiden University, 1991.
LibreCat: /record/8188

Hohenstein, Uwe, and Gregor Engels. “Formal Semantics of an Entity-Relationship Query Language.” In Proceedings of the 9th International Conference on Entity-Relationship Approach (ER 90), Lausanne, Switzerland, 177–88. ER Institute, 1990.
LibreCat: /record/7824

Engels, Gregor. “Elementary Actions on an Extended Entity-Relationship Database.”http://dx.doi.org/10.1007/BFb0017372__In Proceedings of the Workshop on Graph Grammars and Their Application to Computer Science (1990), Bremen (Germany), 532:344–62. Berlin/Heidelberg: Springer, 1990.http://dx.doi.org/10.1007/BFb0017372 .
LibreCat: /record/8259
DOI: http://dx.doi.org/10.1007/BFb0017372

Ebert, Jürgen, and Gregor Engels. “Konzepte Einer Software-Architektur-Beschreibungssprache.” In Software-Entwicklung: Konzepte, Erfahrungen, Perspektiven, Fachtagung, 1989, Marburg (Germany), 212:238–50. Informatik-Fachberichte. Berlin/Heidelberg: Springer, 1989.
LibreCat: /record/7821

Engels, Gregor. “CADDY-O: Syntaxgestütztes, Graphisches Entwerfen Konzeptioneller Datenbankschemata.” In Tagungsband GI-Fachtagung “Interaktive Schnittstellen Für Informationssysteme”, TU Clausthal, Notizen Zu Interaktive Systeme, 18:1–16, 1989.
LibreCat: /record/7822

Engels, Gregor, Uwe Hohenstein, Klaus Hülsmann, Perdita Löhr-Richter, and Hans-Dietrich Ehrich. “CADDY: Computer-Aided Design of Non-Standard Databases.” In Proceedings of the International Conference on System Development Environments &; Factories, Berlin, Germany. Berlin: Pitman Publishing, 1989.
LibreCat: /record/7823

Engels, Gregor. Benutzerschnittstelle Und Architektur Der Integrierten Datenbankentwurfsumgebung CADDY (Kurzfassung). TU Braunschweig, 1989.
LibreCat: /record/8187

Engels, Gregor, and Wilhelm Schäfer. Programmentwicklungsumgebungen: Konzepte Und Realisierung. Stuttgart: Teubner, 1989.
LibreCat: /record/7511

Engels, Gregor, Thorsten Janning, and Wilhelm Schäfer. “A Highly Integrated Tool Set for Program Development Support.”http://dx.doi.org/10.1145/62453.62454__In Proceedings of the Conference on ACM SIGSMALL/PC Symposium on ACTES (SIGSMALL 1988), Cannes (France), 1–10. New York, NY, USA: ACM Press, 1988.http://dx.doi.org/10.1145/62453.62454 .
LibreCat: /record/7818
DOI: http://dx.doi.org/10.1145/62453.62454

Engels, Gregor, Uwe Hohenstein, Leonore Neugebauer, Gunter Saake, and Hans-Dietrich Ehrich. “Konzeption Einer Integrierten Datenbank-Entwurfsumgebung.” In Proceedings of DBTA/SI Data Dictionaries Und Entwicklungswerkzeuge Für Datenbank-Anwendungen, Zürich, Switzerland, 151–57. Verlag der Fachvereine an den Schweiz. Hochschulen und Techniken, 1988.
LibreCat: /record/7819

Engels, Gregor, Uwe Hohenstein, Gunter Saake, and Hans-Dietrich Ehrich. “Auf Dem Weg Zu Einer Integrierten Datenbank-Entwurfsumgebung.” In Proceedings of the GI-Workshop on “Sprachspezifische Programmierumgebungen,” edited by Gregor Engels, Uwe Hohenstein, Gunter Saake, and Hans-D. Ehrich, 38–51. Darmstadt (Germany): G. Snelting, 1988.
LibreCat: /record/7820