1. Improving flexibility of workflow management systems;Agostini,2000
2. A conceptual framework for B2B electronic contracting;Angelov;Proceedings of the Third IFIP Working Conference on Infrastructures for Virtual Enterprises, Sesimbra, Portugal,2002
3. WISE: business to business e-commerce;Alonso;Proceedings of the Ninth International Workshop on Research Issues on Data Engineering, Sydney, Australia,1999
4. BPEL4WS, http://www-106.ibm.com/developerworks/webservices/library/ws-bpel/, 2002.
5. Dynamic and adaptive composition of e-services;Casati;Information Systems,2001