H. Katagiri, K. Hirasawa, J. Hu, and J. Murata. Proceedings of the Genetic and Evolutionary
Computation Conference (GECCO-2001), page 179. San Francisco, California, USA, Morgan Kaufmann, (7-11 July 2001)
H. Katagiri, K. Hirasawa, J. Hu, and J. Murata. GECCO 2002: Proceedings of the Genetic and
Evolutionary Computation Conference, page 890. New York, Morgan Kaufmann Publishers, (9-13 July 2002)