Hendrik Hausmann J, Heckel R. Use Cases as views: A formal approach to Requirements engineering in the Unified Process. In: Proceedings of the GI/OCG-Jahrestagung on Wirtschaft Und Wissenschaft in Der Network Economy - Visionen Und Wirklichkeit (2001), Wien (Österreich). Vol 1. Wien (Österreich): Österreichische Computer Gesellschaft; 2001:595-599.

Heckel R. Open Petri Nets as Semantic Model for Business Process Integration. In: Proceedings of the 2nd International Colloquium on Petri Net Technologies for Modelling Communication Based Systems. DFG Research Group “Petri Net Technology”; 2001:129-134.

Heckel R, Sauer S. Strengthening UML Collaboration Diagrams by State Transformations. In: Proceedings of the 4th International Conference on Fundamental Approaches to Software Engineering (FASE 2001), Genova (Italy). Vol 2029. LNCS. London, UK: Springer; 2001:109-123. doi:http://dx.doi.org/10.1007/3-540-45314-8_9

Küster J. Towards Behavior Consistent Modeling in UML-RT. In: Proceedings of the Forum on Design Languages (FDL’01). Lyon, France; 2001.

Sauer S, Engels G. UML-based Behavior Specification of Interactive Multimedia Applications. In: Proceedings of the IEEE Symposia on Human Centric Computing Languages and Environments (HCC 2001), Stresa (Italy). Washington, DC, USA: IEEE Computer Society; 2001:248-255. doi:http://dx.doi.org/10.1109/HCC.2001.995271

Heckel R, Zündorf A. How to Specify a Graph Transformation Approach - A Meta Model for Fujaba. In: Ehrig H, Padberg J, eds. Proceeding of the Workshop on Uniform Approaches to Graphical Process Specifcation Techniques (UNIGRA 2001, Satellite Event of the ETAPS 2001). Vol 44. Electronic Notes in Theoretical Computer Science. Genova (Italy): Elsevier; 2001:41-51.

Engels G, Küster J, Groenewegen L. On the Specification and Analysis of Protocols in UML-RT. University of Paderborn, Department of Computer Science; 2001.

Padberg J, Jansen L, Ehrig H, Schnieder E, Heckel R. Cooperability in Train Control Systems: Specification of Scenarios using Open Nets. Transactions of the Society for Design and Process Science. 2001;5(1):3-21.

Heckel R, Ehrig H, Wolter U, Corradini A. Double Pullback Transitions and Coalgebraic Loose Semantics for Graph Transformation Systems. Applied Categorical Structures. 2001;9(1):83-110.

Depke R, Heckel R, Küster J. Roles in Agent-Oriented Modeling. International Journal of Software Engineering and Knowledge Engineering. 2001;11(3):281-302. doi:http://dx.doi.org/10.1142/S0218194001000529

Corradini A, Große-Rhode M, Heckel R. A Coalgebraic presentation of structured transition systems. Theoretical Computer Science. 2001;260(1-2):27-55. doi:http://dx.doi.org/10.1016/S0304-3975(00)00121-3

Engels G, Gaulke J, Sauer S. Modelle für automobile Software - Objektorientierte Modellierung von eingebetteten, interaktiven Softwaresystemen im Automobil. Forschungsforum Paderborn. 2001;4:24-29.

Lohmann M, Wagner A. Using an XML-capable mailtool for the communication in software development projects. In: Proceedings of the Workshop on XML Technologies and Software Engineering (XSE; Satellite Event of the ICSE 2001), Toronto (Canada). ; 2001.

Schattkowsky T, Mehner K, Depke R. Using UML models for the Description of Concurrent Behavior in Component Interfaces. In: Proceedings of the Workshop on Concurrency Issues of the UML (Satellite Event of the International Conference on the Unified Modeling Language - UML 2001), Toronto (Canada). ; 2001.

Depke R, Heckel R, Küster J. Agent-oriented Modeling with Graph Transformation. In: Proceedings of the First International Workshop on Agent-Oriented Software Engineering (AOSE 2000), Limerick (Ireland). Vol 1957. LNCS. Berlin/Heidelberg: Springer; 2001:105-120. doi:http://dx.doi.org/10.1007/3-540-44564-1_7

Depke R, Mehner K. “Separation of Concern” mit Rollen, Subjekten und Aspekten. In: Proceedings of the Workshop on Aspektorientierung - Workshop Der GI-Fachgruppe 2.1.9 Objektorientierte Software-Entwicklung (2001), Paderborn (Germany). Technical Report. Universität Paderborn; 2001:1-7.

Engels G, Küster J. Enhancing UML-RT Concepts for Behavioral Consistent Architecture Models. In: Proceedings of the 1st Workshop on Describing Software Architecture with UML (Satellite Event of the ICSE 2001), Toronto (Canada). ; 2001.

Hendrik Hausmann J, Küster J, Sauer S. Identifiying Semantic Dimensions of (UML) Sequence Diagrams. In: Proceedings of the Workshop on Practical UML-Based Rigorous Development Methods - Countering or Integrating the EXtremists (PUML, Colocated with the UML 2001), Toronto (Canada). Vol 7. Lecture Notes in Informatics. Bonn: Gesellschaft für Informatik (GI); 2001:142-157.

Heckel R, Küster J. Behavioral Constraints for Visual Models. In: Proceeding of the Workshop on Graph Transformation and Visual Modelling Techniques (GT-VMT 2001, Satellite Event of the ICALP 2001), Heraklion (Greece). Vol 50. Electronic Notes in Theoretical Computer Science. Elsevier; 2001. doi:dx.doi.org/10.1016/S1571-0661(04)00177-X

Mehner K, Weymann B. Visualization and Debugging of Concurrent Java Programs with UML. In: Proceedings of the Workshop on Software Visualization (Satellite Event of the International Conference on Software Engineering - ICSE 2001), Toronto (Canada). ; 2001.