A. Almal, A. Mitra, R. Datar, P. Lenehan, D. Fry, R. Cote, and W. Worzel. GECCO 2006: Proceedings of the 8th annual conference
on Genetic and evolutionary computation, 1, page 239--246. Seattle, Washington, USA, ACM Press, (8-12 July 2006)
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)