P. Stalph, M. Butz, и G. Pedersen. Proceedings of the 32nd German Conference on Artificial Intelligence (KI-2009), том 5803 из Lecture Notes in Computer Science, стр. 193--200. Springer, (2009)
M. Butz, G. Pedersen, и P. Stalph. GECCO '09: Proceedings of the 11th Annual Conference on Genetic and Evolutionary Computation, стр. 1171--1178. (2009)