J. Pfeiffer, D. Duzevik, F. Rothlauf, and K. Yamamoto. Guenther et al Raidl (Ed.): Proceedings of the Genetic and Evolutionary Computation Conference (GECCO 2009), Montreal, Canada, July 8-12, page 1585--1592. New York ACM, (2009)
J. Pfeiffer, U. Golle, and F. Rothlauf. Maarten et al Keijzer (Ed.): Proceedings of the Genetic and Evolutionary Computation Conference (GECCO 2008), Atlanta, USA, July 12-16, page 697--704. ACM, (2008)