Depke R, Engels G, Küster J. On the Integration of Roles in the UML. University of Paderborn, Department of Computer Science; 2000.
LibreCat: /record/8207

Depke R, Heckel R, Küster J. Modeling Agent-Based Systems with Graph Transformation. University of Paderborn, Department of Computer Science; 2000.
LibreCat: /record/8208

Engels G, Hücking R, Sauer S, Wagner A. UML Collaboration Diagrams and Their Transformation to Java. University of Paderborn, Department of Computer Science; 1999.
LibreCat: /record/8204

Andries M, Engels G, Habel A, et al. Graph Transformation for Specification and Programming. University of Bremen, Department of Mathematics and Computer Science; 1996.
LibreCat: /record/8197

Pletat U, Engels G, Ehrich H-D. Operational Semantics of Algebraic Specifications with Conditional Equations. University of Dortmund, Department of Computer Science; 1981.
LibreCat: /record/8185