S. Ali, P. Roop, I. Warren, and Z. Bhatti. Service Oriented System Engineering (SOSE), 2011 IEEE 6th International Symposium on, page 93-101. (December 2011)
F. Francone, L. Deschaine, and J. Warren. GECCO '07: Proceedings of the 9th annual conference on
Genetic and evolutionary computation, 2, page 1999--2006. London, ACM Press, (7-11 July 2007)