1. Stephen, J.H.Y., James, S.F.H., Blue, C.W.L., Chung, J.-Y.: Composition and evaluation of trustworthy Web Services. In: Proceedings of the IEEE EEE 2005 international workshop on Business services networks BSN 2005 (March 2005)
2. Tang, Y., Chen, L., He, K.-T., Jing, N.: SRN: An Extended Petri-Net-Based Workflow Model for Web Service Composition. In: Proceedings of the IEEE International Conference on Web Services (ICWS 2004) (June 2004)
3. Hamadi, R.: Boualem Benatallah: A Petri Net-Based Model for Web Service Composition
4. Jian, S., Peng, Z.: Modeling and Analysis of Web Services Flow Language (WSFL) Based Petri Nets. Mini-Micro Systems 25(7), 1382–1386 (2004)