Wil M. P. van der Aalst Eike Best Applications and Theory of Petri Nets 2003, 24th International Conference, ICATPN 2003, Eindhoven, The Netherlands, June 23-27, 2003, Proceedings ICATPN Lecture Notes in Computer Science 2679 Springer 2003 3-540-40334-5 db/conf/apn/icatpn2003.html