Affiliation: | Hasso Plattner Institute, Business Process Technology, Universität Potsdam, Helmert Str. 2-3, Potsdam D-14482, Germany; Universität Wien, Research Group Workflow Systems and Technology, Room 4.39, Währingerstraße 29, 1090 Wien, Austria; LIMOS—UMR CNRS 6158, Blais, Pascale University, France; University of Rostock, Institute of Computer Science, LS Theory of Programming Languages and Programming, 18051 Rostock, Germany |