G. Harik, and F. Lobo. In W. Banzhaf et al., editors, Proceedings of the Genetic and Evolutionary Computation Conference GECCO-99, San Francisco, CA. Morgan Kaufmann, page 258-265. (1999)
A. Samsonovich, and K. Jong. GECCO '05: Proceedings of the 2005 conference on Genetic and evolutionary computation, page 1355--1362. New York, NY, USA, ACM, (2005)