Rudolf K. Keller

Ismaïl Khriss, Mohammed Elkoutbi, Rudolf K. Keller: Automating the Synthesis of UML Statechart Diagrams from Multiple Collaboration Diagrams, UML'98: Beyond the Notation - International Workshop (Preliminary Proceedings), 1998, (BibTeX entry).
Ismaïl Khriss, Mohammed Elkoutbi, Rudolf K. Keller: Automating the Synthesis of UML StateChart Diagrams from Multiple Collaboration Diagrams, UML'98: Beyond the Notation - International Workshop (Final Proceedings), 1998, (BibTeX entry).
Mohammed Elkoutbi, Rudolf K. Keller: A Comparison Framework and Assessment of two Specification Approaches based on UML Scenarios, Workshop in Software Model Engineering, 2002, (BibTeX entry).
Mohammed Elkoutbi, Rudolf K. Keller: User Interface Prototyping Based on UML Scenarios and High-Level Petri Nets, Springer, 2000, (BibTeX entry).
Rudolf K. Keller, Jean-François Bédard, Guy Saint-Denis: Design and Implementation of a UML-Based Design Repository, Springer, 2001, (BibTeX entry).
Patrick Pagé, Rudolf K. Keller, Reinhard Schauer: A JavaCC Parser for the UML-Based CDIF Transfer Format, 1998, (BibTeX entry).

dblp: Computer Science Bibliography (University of Trier, Germany). (Note that this does not always work due to different naming schemes.)