J. Sakuma, and S. Kobayashi. GECCO '07: Proceedings of the 9th annual conference on Genetic and
evolutionary computation, page 1372--1379. New York, NY, USA, ACM, (2007)
J. Joines, and C. Houck. Proceedings of the First IEEE Conference on Evolutionary Computation,
1994. IEEE World Congress on Computational Intelligence., 2, page 579-584. Washington, DC, USA, IEEE Computer Society, (June 1994)