D. Shepherd, L. Pollock, and K. Vijay-Shanker. PASTE '07: Proceedings of the 7th ACM SIGPLAN-SIGSOFT workshop on Program analysis for software tools and engineering, page 49--54. ACM, (2007)
G. Barlow, and C. Oh. GECCO 2006: Proceedings of the 8th annual conference
on Genetic and evolutionary computation, 1, page 135--142. Seattle, Washington, USA, ACM Press, (8-12 July 2006)