A. Agogino, K. Tumer, and R. Miikkulainen. GECCO'05: Proc. 7th Genetic and Evolutionary Computation Conf., page 1309--1316. Washington, DC, ACM Press, (2005)
G. Hornby, M. Fujita, S. Takamura, T. Yamamoto, and O. Hanagata. Proceedings of the Genetic and Evolutionary
Computation Conference, 2, page 1297--1304. Orlando, Florida, USA, Morgan Kaufmann, (13-17 July 1999)