T. Yu, and J. Rutherford. The Seventh ACM SIGKDD International Conference on
Knowledge Discovery and Data Mining, San Francisco, California, USA, (26-29 August 2001)
J. Valdes, and A. Barton. Late breaking paper at Genetic and Evolutionary
Computation Conference (GECCO'2007), page 2580--2587. London, United Kingdom, ACM Press, (7-11 July 2007)