A. Kordon, and C. Lue. Proceedings of the 2004 IEEE Congress on Evolutionary
Computation, page 561--568. Portland, Oregon, IEEE Press, (20-23 June 2004)
F. Castillo, J. Sweeney, and W. Zirk. Proceedings of the 2004 IEEE Congress on Evolutionary
Computation, page 556--560. Portland, Oregon, IEEE Press, (20-23 June 2004)