In: KI - Künstliche Intelligenz, German Journal on Artificial Intelligence - Organ des Fachbereiches "Künstliche Intelligenz" der Gesellschaft für Informatik e.V. (KI), No. 1, Pages 5-11, arentap Verlag, Bremen, 2002.
In: Proceedings 9th International Conference on Algebraic Methodology And Software Technology, AMAST2002. International Conference on Algebraic Methodology and Software Technology (AMAST-2002), Springer-Verlag, LNCS, 2002.
In: Proceedings 9th International Conference on Algebraic Methodology And Software Technology, AMAST2002. International Conference on Algebraic Methodology and Software Technology (AMAST-2002), Springer-Verlag, LNCS, 2002.
In: Proceedings 9th International Conference on Logic for Programming Artificial Intelligence and Reasoning. International Conference on Logic for Programming, Artificial Intelligence, and Reasoning (LPAR), Springer-Verlag, LNAI, 2002.
DFKI, Workshop-proceedings, First International Joint Conference on Autonomous Agents and Multi-Agent Systems, also DFKI-Reseach Report RR-02-03, DFKI Research Reports (RR), Vol. 02-03, Bologna, Italy, 2002.