8,W.M.P.van der Aalst.Three Good Reasons for Using a Petri-net- based Workflow Management System. In: Navathe S, Wakayama T, eds. Processings ofthe International Working Conference on Information and Process Integration inEnterprises (IPIC' 96) [M]. Camebfidge: KluwerAcademic Publishers, Nov, 2006: 179--201.