Semi-Formal and Formal Specification Techniques
G. Engels, H. Ehrig, F. Orejas, M. Wirsing, eds., Semi-Formal and Formal Specification Techniques, Schloss Dagstuhl, Leibniz Center for Informatics, 1998.
LibreCat: /record/7793

6th International Workshop on Theory and Applications of Graph Transformations (TAGT ), Paderborn, Selected Papers
G. Engels, H. Ehrig, H.-J. Kreowski, G. Rozenberg, eds., 6th International Workshop on Theory and Applications of Graph Transformations (TAGT ’98), Paderborn, Selected Papers, Springer, Berlin/Heidelberg, 1998.
LibreCat: /record/7794

Ein Ansatz zur Verbesserung des Entwicklungsprozesses von Multimedia-Anwendungen
R. Depke, G. Engels, K. Mehner, S. Sauer, A. Wagner, in: Proceedings of the GI-Fachtagung on Softwaretechnik (1998), Paderborn (Germany), GI, 1998, pp. 12–19.
LibreCat: /record/7843

Integration of Single Pushout Transformation and Functional Programming
K. Didrich, A. Wagner, in: Proceedings of the World Conference on Integrated Design and Process Technology (IDPT 1998), Berlin (Germany), Society for Design and Process Science, 1998, pp. 65–73.
LibreCat: /record/7844

A generalized schema of a decision-making process of a SCENAR-therapeutist
A. Cherchago, in: Proceedings of the Scientific and Technical Conference on Medical Information Systems (MIS 1998), Taganrog (Russia), 1998.
LibreCat: /record/7845

Compositional Verification of Reactive Systems Specified by Graph Transformation
R. Heckel, in: Proceedgins of the First International Conference on Fundamental Approaches to Software Engineering (FASE 1998), Lisbon (Portugal), Springer, Berlin/Heidelberg, 1998, pp. 138–153.
LibreCat: /record/7847
DOI: http://dx.doi.org/10.1007/BFb0053578

Interoperability in Train Control Systems: Specification of Scenarios Using Open Nets
J. Padberg, L. Jansen, R. Heckel, H. Ehrig, in: Proceedings of the Conference on Integrated Design and Process Technology (IDPT 1998), Berlin (Germany), Society for Design and Process Science, 1998, pp. 17–28.
LibreCat: /record/7848

Electronic Commerce Systeme als Anwendungsbeispiel für Evolutionstechniken
G. Engels, S. Kolmschlag, Electronic Commerce Systeme Als Anwendungsbeispiel Für Evolutionstechniken, University of Paderborn, C-LAB, 1998.
LibreCat: /record/8202

Unterstützung der Flexibilität eines Electronic Commerce Systems durch Evolutionstechniken
S. Kolmschlag, G. Engels, in: Proceedings of the Workshop on “Integration Heterogener Softwaresysteme” (Satellite Event of the GI-Jahrestagung Informatik 1998), Magdeburg (Germany), GI, 1998, pp. 13–24.
LibreCat: /record/8280

Structured Transition Systems as Lax Coalgebras
A. Corradini, M. Große-Rhode, R. Heckel, in: Proceedings of the First Workshop on Coalgebraic Methods in Computer Science (CMCS 1998), Lisbon (Portugal), Elsevier, 1998.
LibreCat: /record/8281

Simple Modules for Grace
R. Heckel, B. Hoffmann, P. Knirsch, S. Kuske, in: Selected Papers of the 6th International Workshop on Theory and Application of Graph Transformation (TAGT 1998), Paderborn (Germany), Springer, Berlin/Heidelberg, 1998, pp. 215–224.
LibreCat: /record/8282

Graph Transformation and Other Rule-Based Formalisms with Incomplete Information
H. Ehrig, R. Heckel, J. Padberg, G. Rozenberg, in: Proceedings of the 6th International Workshop on Theory and Application of Graph Transformation (TAGT 1998), Paderborn (Germany), 1998.
LibreCat: /record/8283

Double-Pullback Graph Transitions: A Rule-Based Framework with Incomplete Information
H. Ehrig, R. Heckel, M. Llabrés, F. Orejas, J. Padberg, G. Rozenberg, in: Selected Papers from the 6th International Workshop on Theory and Application of Graph Transformations (TAGT 1998), Paderborn (Germany), Springer, Berlin/Heidelberg, 1998, pp. 85–102.
LibreCat: /record/8284
DOI: http://dx.doi.org/10.1007/b75045

Classification and Comparison of Modularity Concepts for Graph Transformation Systems
H. Ehrig, G. Engels, R. Heckel, G. Taentzer, in: Pre-Proceedings of the 6th International Workshop on Theory and Application of Graph Transformation (TAGT ’98), Paderborn (Germany), University of Paderborn, 1998, pp. 122–131.
LibreCat: /record/8285

Model Checking Graph-Interpreted Temporal Formulas
F. Gadducci, R. Heckel, M. Koch, in: Proceedings of the 6th International Workshop on Theory and Application of Graph Transformation (TAGT 1998), Paderborn (Germany), Paderborn, 1998.
LibreCat: /record/8286

DPO Derivations via Disconnected Rules
F. Gadducci, R. Heckel, M. Llabrés, in: Proceedings of the 6th International Workshop on Theory and Application of Graph Transformation (TAGT 1998), Paderborn (Germany), 1998.
LibreCat: /record/8287

Event Processing in Mobile and Active Database Systems Using Broadcasts
S. Sauer, O. Zukunft, in: Proceedings of the 9th International Workshop on Database and Expert Systems Applications (DEXA 1998), Vienna (Austria), IEEE Computer Society, Washington, DC, USA, 1998, pp. 420–426.
LibreCat: /record/8288

Construction and Characterisation of Double-Pullback Graph Transitions
H. Ehrig, R. Heckel, M. Llabrés, F. Orejas, in: Proceedings of the 6th International Workshop on Theory and Application of Graph Transformation (TAGT 1998), Paderborn (Germany), 1998.
LibreCat: /record/8289

Open Graph Transformation Systems: A New Approach to the Compositional Modelling of Concurrent and Reactive Systems
R. Heckel, Open Graph Transformation Systems: A New Approach to the Compositional Modelling of Concurrent and Reactive Systems, 1998.
LibreCat: /record/7587

Themenheft: Softwaretechnik
G. Engels, ed., Themenheft: Softwaretechnik, Springer, Berlin/Heidelberg, 1997.
LibreCat: /record/7795
DOI: http://dx.doi.org/10.1007/s004500050085

A View-Oriented Approach to System Modelling Using Graph Transformations
G. Engels, R. Heckel, G. Taentzer, H. Ehrig, in: M. Jazayeri, H. Schauer (Eds.), Proceedings European Software Engineering Conference (ESEC 1997), Zürich (Switzerland), Springer, Berlin/Heidelberg, 1997, pp. 327–343.
LibreCat: /record/7839
DOI: http://dx.doi.org/10.1007/3-540-63531-9

Thermooptische Effekte in Nd:YAG-Slablasern
R. Depke, S. Knoke, W. Schöne, A. Tünnermann, H. Welling, in: Verhandlungen Der Deutschen Physikalischen Gesellschaft, Physik-Verlag, Weinheim, Germany, 1997.
LibreCat: /record/7840

Integrating the Specification Techniques of Graph Transformation and Temporal Logic
R. Heckel, H. Ehrig, U. Wolter, A. Corradini, in: Proceedings of the 22nd International Symposium on Mathematical Foundations of Computer Science (MFCS 1997), Bratislava (Slovakia), Springer, London, UK, 1997, pp. 219–228.
LibreCat: /record/7841
DOI: http://dx.doi.org/10.1007/BFb0029965

Einfrequenzbetrieb von Nd:YAG-Stablasersystemen hoher Ausgangsleistung
S. Knoke, R. Depke, W. Schöne, O.S. Brozek, A. Tünnermann, H. Welling, in: Verhandlungen Der Deutschen Physikalischen Gesellschaft, Weinheim (Germany), Physik-Verlag, 1997.
LibreCat: /record/7842

Loose Semantics and Constraints for Graph Transformation Systems
R. Heckel, H. Ehrig, U. Wolter, A. Corradini, Loose Semantics and Constraints for Graph Transformation Systems, 1997.
LibreCat: /record/8201

A 2-Categorical Presentation of Distributed Graph Transformation
F. Gadducci, R. Heckel, in: Proceedings of the Workshop on the General Theory of Graph Transformation Systems (GETGRATS 1997), Bordeaux (France), Bordeaux, 1997.
LibreCat: /record/8276

Combining Graph Transformations with Temporal Logic
F. Gadducci, R. Heckel, M. Koch, in: Proceedings of the Workshop on the General Theory of Graph Transformation Systems (GETGRATS 1997), Bordeaux (France), Bordeaux, 1997.
LibreCat: /record/8277

An Inductive View of Graph Transformation
F. Gadducci, R. Heckel, in: Proceedings of the 12th International Workshop on Recent Trends in Algebraic Development Techniques (WADT 1997), Tarquinia (Italy), Springer, Berlin/Heidelberg, 1997, pp. 223–237.
LibreCat: /record/8278

Compositional Development and Verification of Graph Transformation Systems Based on Views and View Integration
R. Heckel, in: Proceedings of the Workshop on the General Theory of Graph Transformation Systems (GETGRATS 1997), Bordeaux (France), 1997.
LibreCat: /record/8279

Guest Editors' Introduction
G. Engels, H. Jürgen Schneider, International Journal on Software Engineering and Knowledge Engineering (IJSEKE) 7 (1997) 397–400.
LibreCat: /record/7402
DOI: http://dx.doi.org/10.1142/S0218194097000230

A Combined Reference Model- and View-Based Approach to System Specification
G. Engels, R. Heckel, G. Taentzer, H. Ehrig, Int. Journal of Software and Knowledge Engeneering 7 (1997) 457–477.
LibreCat: /record/7403

Algebraic Approaches to Graph Transformation, Part II: Single Pushout Approach and Comparison with Double Pushout Approach
H. Ehrig, R. Heckel, M. Korff, M. Löwe, L. Ribeiro, A. Wagner, A. Corradini, in: Handbook of Graph Grammars and Computing by Graph Transformations, Volume 1: Foundations, World Scientific, Singapore, 1997, pp. 247–312.
LibreCat: /record/7515

How to represent a visual specification
G. Engels, J. Rekers, M. Andries, in: Visual Language Theory, Springer, Berlin/Heidelberg, 1997, pp. 241–255.
LibreCat: /record/7516

Algebraic Approaches to Graph Transformation, Part I: Basic Concepts and Double Pushout Approach
A. Corradini, U. Montanari, F. Rossi, H. Ehrig, R. Heckel, M. Löwe, in: Handbook of Graph Grammars and Computing by Graph Transformation, Volume 1: Foundations, World Scientific, Singapore, 1997, pp. 163–245.
LibreCat: /record/7517

Special Issue on Graph Transformations
G. Engels, H. Ehrig, G. Rozenberg, A. Skowron, eds., Special Issue on Graph Transformations, IOS Press, Amsterdam, 1996.
LibreCat: /record/7796

Synchronization of Views and Loose Semantics of Typed Graph Productions
H. Ehrig, R. Heckel, J. Padberg, G. Taentzer, U. Wolter, A. Corradini, G. Engels, in: Report on the Dagstuhl-Seminar 9637 on Graph Transformations in Computer Science, Technical University of Berlin, 1996, pp. 11–12.
LibreCat: /record/7834

Behavioral Constraints for Loose Graph Transformation Systems
R. Heckel, in: Report on the Dagstuhl-Seminar 9637 on Graph Transformations in Computer Science, Technical University of Berlin, 1996, pp. 12–13.
LibreCat: /record/7835

Industrial maintenance modelled in SOCCA: an experience report
T. de Bunje, G. Engels, L. Groenewegen, A. Matsinger, M. Rijnbeek, in: Proceedings of the Fourth International Conference on the Software Process (ICSP 1996), Brighton (UK), IEEE Computer Society, Washington, DC, USA, 1996, pp. 13–26.
LibreCat: /record/7836
DOI: http://dx.doi.org/10.1109/ICSP.1996.565021

A View-Based Approach to System Modelling
G. Engels, H. Ehrig, R. Heckel, G. Taentzer, A. Corradini, in: Report on Dagstuhl-Seminar 9637 on Graph Transformations in Computer Science, Technical University of Berlin, 1996, p. 11.
LibreCat: /record/7837

Object-oriented specification of coordinated collaboration
G. Engels, L. Groenewegen, G. Kappel, in: Proceedings of IFIP World Conference on IT Tools (1996), Canberra (Australia), Chapman &; Hall, 1996, pp. 437–452.
LibreCat: /record/7838

Graph Transformation for Specification and Programming
M. Andries, G. Engels, A. Habel, B. Hoffmann, H.-J. Kreowski, S. Kuske, D. Plump, A. Schürr, G. Taentzer, Graph Transformation for Specification and Programming, University of Bremen, Department of Mathematics and Computer Science, 1996.
LibreCat: /record/8197

Definition of an Encapsulated Hierarchical Graph Data Model: Static Aspects, Part 1.
G. Busatto, G. Engels, Definition of an Encapsulated Hierarchical Graph Data Model: Static Aspects, Part 1., Vakgroep Informatica, Rijksuniversiteit Leiden, 1996.
LibreCat: /record/8198

Object-oriented Specification of Coordinated Collaboration
G. Engels, L. Groenewegen, G. Kappel, Object-Oriented Specification of Coordinated Collaboration, Vakgroep Informatica, Rijksuniversiteit Leiden, 1996.
LibreCat: /record/8199

Horizontal and Vertical Structuring of Typed Graph Transformation Systems
R. Heckel, A. Corradini, H. Ehrig, M. Löwe, Horizontal and Vertical Structuring of Typed Graph Transformation Systems, 1996.
LibreCat: /record/8200

Towards Measurable Process Models
T. de Bunje, G. Engels, L. Groenewegen, M. Heus, A. Matsinger, in: Proceedings of the Workshop on Software Process Technology (EWSPT 1996), Nancy (France), Springer, Berlin/Heidelberg, 1996, pp. 183–187.
LibreCat: /record/8271
DOI: http://dx.doi.org/10.1007/BFb0017743

Pragmatic and Semantic Aspects of a Module Concept for Graph Transformation Systems
H. Ehrig, G. Engels, in: Selected Papers from the 5th International Workshop on Graph Gramars and Their Application to Computer Science, Williamsburg, VA (USA), Springer, Berlin/Heidelberg, 1996, pp. 137–154.
LibreCat: /record/8272

Comprehensive Support for Change: Generic, Multi-dimensional (Software) Engineering Frameworks (position paper)
G. Engels, A. Zamperoni, in: Proceedings of the Workshop on Requirements Engineering in a Changing World (Satellite Event of the Conference on Advanced Information Systems Engineering (CAISE 1996)), Crete (Greece), 1996, pp. 42–44.
LibreCat: /record/8273

Reuse of Software Process Fragments is Reuse of Software, too
L. Groenewegen, G. Engels, in: Proceedings of the 10th International Software Process Workshop (ISPW 1996), Ventron (France), IEEE Computer Society, Washington, DC, USA, 1996, p. 68.
LibreCat: /record/8274

Automatic Integration of Safety Invariants into Z Specifications
R. Heckel, M. Conrad, G. Egger, J. Hiemer, in: Proceedings of the Workshop on Tools for System Development and Verifcation, Shaker Verlag, Bremen, Germany, 1996, pp. 70–83.
LibreCat: /record/8275

Graph Grammars with Negative Application Conditions
A. Habel, R. Heckel, G. Taentzer, Fundamenta Informaticae 26 (1996) 287–313.
LibreCat: /record/7404

Horizontal and Vertical Structuring of Typed Graph Transformation Systems
R. Heckel, A. Corradini, H. Ehrig, M. Löwe, Mathematical Structures in Computer Science 6 (1996) 613–648.
LibreCat: /record/7405

A Hybrid Query Language for the Extended Entity Relationship Model
M. Andries, G. Engels, Journal of Visual Languages and Computing 7 (1996) 321–352.
LibreCat: /record/7406
DOI: http://dx.doi.org/10.1006/jvlc.1996.0017

Tight Integration on One Document: The Programming Environment
G. Engels, M. Nagl, W. Schäfer, B. Westfechtel, in: Building Tightly Integrated Software Development Environments: The IPSEN Approach, Springer, Berlin/Heidelberg, 1996, pp. 170–177.
LibreCat: /record/7514

Attributed Graph Transformations with Controlled Application of Rules
R. Heckel, J. Müller, G. Taentzer, A. Wagner, in: Proceedings of the Colloquium on Graph Transformation and Its Application in Computer Science, Universitat de les Illes Balears, 1995.
LibreCat: /record/7831

Record Linkage of Anonymous Data by Control Numbers
W. Thoben, H.-J. Appelrath, S. Sauer, in: Proceedings of the 18th Annual Conference of the Gesellschaft Für Klassifikation, Oldenburg (Germany), Springer, Berlin/Heidelberg, 1995, pp. 412–419.
LibreCat: /record/7832

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

Graphische Spezifikation ausgewählter Teile von AGG - einem algebraischen Graphgrammatiksystem
M. Conrad, M. Gajewsky, R. Holl-Biniasz, M. Rudolf, J. Demuth, S. Weber, R. Heckel, J. Müller, G. Taentzer, A. Wagner, Graphische Spezifikation Ausgewählter Teile von AGG - Einem Algebraischen Graphgrammatiksystem, 1995.
LibreCat: /record/8194

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

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

Coordination by Behavioural Views and Communication Patterns
L. Groenewegen, G. Engels, in: Proceedings of the 4th European Workshop on Software Process Technology (EWSPT 1995), Noordwijkerhout (The Netherlands), Springer, Berlin/Heidelberg, 1995, pp. 189–192.
LibreCat: /record/8266
DOI: http://dx.doi.org/10.1007/3-540-59205-9_56

A Compositional Approach to Structuring and Refinement of Typed Graph Grammars
A. Corradini, R. Heckel, in: Proceedings of the Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph Rewriting and Computation (SEGRAGRA 1995), Volterra (Italy), Elsevier, 1995, pp. 46–55.
LibreCat: /record/8267

GRAPHIT: Graphical Support and Integration of Formal and Semiformal Methods for Software Specification and Development
B. Bardohl, R. Bardohl, P. Castro, H. Ehrig, R. Heckel, L. Ribeiro, D. Nunes, A. Martini, in: Proceedings of the 3rd German-Brazilian Workshop on Information Technology (1995), Berlin (Germany), Forschungszentrum Jülich GmbH, 1995.
LibreCat: /record/8268

Encapsulated Hierarchical Graphs, Graph Types, and Meta Types
G. Engels, A. Schürr, in: Proceedings of the Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph Rewriting and Computation (SEGRAGRA 1995), Volterra (Italy), Elsevier, Amsterdam, The Netherlands, 1995, pp. 101–109.
LibreCat: /record/8269
DOI: http://dx.doi.org/10.1016/S1571-0661(05)80186-0

Ensuring Consistency of Conditional Graph Grammars - A constructive Approach
R. Heckel, A. Wagner, in: Proceedings of the Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph Rewriting and Computation (SEGRAGRA 1995), Volterra (Italy), Elsevier, 1995, pp. 118–126.
LibreCat: /record/8270
DOI: http://dx.doi.org/10.1016/S1571-0661(05)80188-4

Fundamentals of Object-Oriented Languages, Systems, and Methods
H.-D. Ehrich, G. Engels, J. Paredaens, J. Wegner, eds., Fundamentals of Object-Oriented Languages, Systems, and Methods, Schloss Dagstuhl, Leibniz Center for Informatics, 1994.
LibreCat: /record/7797

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

Berücksichtigung von Datenschutzaspekten in einem bevölkerungsbezogenen Krebsregister
W. Thoben, H.-J. Appelrath, J. Rettig, S. Sauer, in: Proceedings of the Conference on Medizin Und Information, Biometrie Und Epidemiologie (GMDS 1994), Dresden (Germany), MMV Medizin Verlag, München, 1994, pp. 88–90.
LibreCat: /record/7827

Structural and Behavioural Views on OMT-Classes
J. Ebert, G. Engels, in: Proceedings of the International Symposium on Object-Oriented Methodologies and Systems (ISOOMS 1994), Palermo (Italy), Springer, Berlin/Heidelberg, 1994, pp. 142–157.
LibreCat: /record/7828

Object-Oriented System Development: Will the New Approach Solve Old Problems?
G. Engels, G. Kappel, in: Proceedings of the IFIP 13th World Computer Congress on Information Processing, Hamburg (Germany), Elsevier, 1994, pp. 434–441.
LibreCat: /record/7829

Towards a Module Concept for Graph Transformation Systems: The Software Engineering Perspective
G. Engels, H. Ehrig, in: Proceedings Colloquium on Graph Transformation and Its Application in Computer Science, Universitat de les Illes Balears, Departament de Ci, 1994.
LibreCat: /record/7830

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

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

Specification of coordinated behaviour by SOCCA
G. Engels, L. Groenewegen, in: Proceedings of the Third European Workshop on Software Process Technology (EWSPT 1994), Villard de Lans (France), Springer, Berlin/Heidelberg, 1994, pp. 128–151.
LibreCat: /record/8264
DOI: http://dx.doi.org/10.1007/3-540-57739-4_19

Visual Specification of Complex Database Actions
G. Engels, P. Löhr, in: Proceedings of the 2nd International East/West Database Workshop, Klagenfurt (Germany), Springer, Berlin/Heidelberg, 1994, pp. 303–314.
LibreCat: /record/8265

Visuelles Spezifizieren von komplexen Aktionen auf Datenbankstrukturen
P. Löhr-Richter, G. Engels, GI-Datenbank Rundbrief 13 (1994) 33–35.
LibreCat: /record/7407

Design Representation
J. Ebert, G. Engels, in: Encyclopedia of Software Engineering, John Wiley &; Sons, Inc., 1994, pp. 382–394.
LibreCat: /record/7512

SOCCA: Specifications of Coordinated and Cooperative Activities
G. Engels, L. Groenewegen, in: Software Process Modelling and Technology, Research Studies Press, Taunton, 1994, pp. 71–102.
LibreCat: /record/7513

Integrationsaspekte bei verteilter Software-Entwicklung
G. Engels, A.A. Verrijn-Stuart, in: Fortschritt-Berichte VDI, VDI Verlag, 1993, pp. 45–53.
LibreCat: /record/7826

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

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

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

Modular, Visual Specifications of Software Processes
G. Engels, L. Groenewegen, in: Proceedings of the Workshop on Software Process (ISPW 1993), Wadern (Germany), IEEE Computer Society, Washington, DC, USA, 1993, pp. 66–68.
LibreCat: /record/8262

Functional Description of Parallel Processes
P. Koopman, L. Groenewegen, G. Engels, in: Proceedings of the Conference SION Computing Science in the Netherlands (CSN ’92), The Netherlands, 1992, pp. 156–167.
LibreCat: /record/7825

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

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

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

SQL/EER - Syntax and Semantics of an Entity-Relationship-Based Query Language
U. Hohenstein, G. Engels, Information Systems 17 (1992) 209–242.
LibreCat: /record/7408
DOI: http://dx.doi.org/10.1016/0306-4379(92)90014-E

Building Integrated Software Development Environments, Part I: Tool Specification
G. Engels, C. Lewerentz, M. Nagl, W. Schäfer, A. Schürr, ACM Transactions on Software Engineering and Methodology (TOSEM) 1 (1992) 135–167.
LibreCat: /record/7409

Conceptual Modelling of Database Applications Using an Extended ER Model
G. Engels, M. Gogolla, U. Hohenstein, K. Hülsmann, P. Löhr-Richter, G. Saake, H.-D. Ehrich, Data &; Knowledge Engineering 9 (1992) 157–204.
LibreCat: /record/7410
DOI: http://dx.doi.org/10.1016/0169-023X(92)90008-Y

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

Formal Semantics of an Entity-Relationship Query Language
U. Hohenstein, G. Engels, in: Proceedings of the 9th International Conference on Entity-Relationship Approach (ER 90), Lausanne, Switzerland, ER Institute, 1990, pp. 177–188.
LibreCat: /record/7824

Elementary Actions on an Extended Entity-Relationship Database
G. Engels, in: Proceedings of the Workshop on Graph Grammars and Their Application to Computer Science (1990), Bremen (Germany), Springer, Berlin/Heidelberg, 1990, pp. 344–362.
LibreCat: /record/8259
DOI: http://dx.doi.org/10.1007/BFb0017372

Konzepte einer Software-Architektur-Beschreibungssprache
J. Ebert, G. Engels, in: Software-Entwicklung: Konzepte, Erfahrungen, Perspektiven, Fachtagung, 1989, Marburg (Germany), Springer, Berlin/Heidelberg, 1989, pp. 238–250.
LibreCat: /record/7821

CADDY-O: Syntaxgestütztes, graphisches Entwerfen konzeptioneller Datenbankschemata
G. Engels, in: Tagungsband GI-Fachtagung “Interaktive Schnittstellen Für Informationssysteme”, TU Clausthal, Notizen Zu Interaktive Systeme, 1989, pp. 1–16.
LibreCat: /record/7822

CADDY: Computer-Aided Design of Non-Standard Databases
G. Engels, U. Hohenstein, K. Hülsmann, P. Löhr-Richter, H.-D. Ehrich, in: Proceedings of the International Conference on System Development Environments &; Factories, Berlin, Germany, Pitman Publishing, Berlin, 1989.
LibreCat: /record/7823

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

Programmentwicklungsumgebungen: Konzepte und Realisierung
G. Engels, W. Schäfer, Programmentwicklungsumgebungen: Konzepte Und Realisierung, Teubner, Stuttgart, 1989.
LibreCat: /record/7511

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

Konzeption einer integrierten Datenbank-Entwurfsumgebung
G. Engels, U. Hohenstein, L. Neugebauer, G. Saake, H.-D. Ehrich, in: Proceedings of DBTA/SI Data Dictionaries Und Entwicklungswerkzeuge Für Datenbank-Anwendungen, Zürich, Switzerland, Verlag der Fachvereine an den Schweiz. Hochschulen und Techniken, 1988, pp. 151–157.
LibreCat: /record/7819

Auf dem Weg zu einer integrierten Datenbank-Entwurfsumgebung
G. Engels, U. Hohenstein, G. Saake, H.-D. Ehrich, in: G. Engels, U. Hohenstein, G. Saake, H.-D. Ehrich (Eds.), Proceedings of the GI-Workshop on “Sprachspezifische Programmierumgebungen,” G. Snelting, Darmstadt (Germany), 1988, pp. 38–51.
LibreCat: /record/7820