H. Foster, S. Uchitel, J. Magee, and J. Kramer. Proceedings of 2005 IEEE International Conference on Web Services (ICWS 2005), page 95-102. Orlando, FL, USA, IEEE Computer Society, (July 2005)
H. Foster, S. Uchitel, J. Magee, and J. Kramer. Proceedings of 18th IEEE International Conference on Automated Software Engineering (ASE), page 152--161. Montreal, Canada, (October 2003)