G. Kokai, R. Vanyi, and Z. Toth. Proceedings of the Genetic and Evolutionary
Computation Conference, 2, page 1588--1595. Orlando, Florida, USA, Morgan Kaufmann, (13-17 July 1999)
A. Brabazon, M. O'Neill, R. Matthews, and C. Ryan. GECCO 2002: Proceedings of the Genetic and
Evolutionary Computation Conference, page 1011--1018. New York, Morgan Kaufmann Publishers, (9-13 July 2002)