L. Vanneschi, Y. Pirola, and P. Collard. GECCO 2006: Proceedings of the 8th annual conference
on Genetic and evolutionary computation, 1, page 895--902. Seattle, Washington, USA, ACM Press, (8-12 July 2006)
H. Subramanian, S. Ramamoorthy, P. Stone, and B. Kuipers. GECCO 2006: Proceedings of the 8th annual conference
on Genetic and evolutionary computation, 2, page 1777--1784. Seattle, Washington, USA, ACM Press, (8-12 July 2006)