University of Nijmegen, Department of Informatics, Technical Report No. 89--14, September 1989.
Abstract: For the development of information systems a conceptual specification technique for the process parts of business activities, so-called tasks, is needed. In this paper such a specification technique, called Conceptual Task Model (CTM), is presented, which is based on Predicate/Transition nets, the elementary data model of NIAM and the conceptual data manipulation language RIDL.