P. Whigham. First International Conference on Genetic Algorithms
in Engineering Systems: Innovations and Applications,
GALESIA, 414, page 461--466. Sheffield, UK, IEE, (12-14 September 1995)
W. Langdon. Genetic Programming 1996: Proceedings of the First
Annual Conference, page 141--148. Stanford University, CA, USA, MIT Press, (28--31 July 1996)
E. Korkmaz, and G. Ucoluk. 2001 Genetic and Evolutionary Computation Conference
Late Breaking Papers, page 245--251. San Francisco, California, USA, (9-11 July 2001)
A. Devert, N. Bredeche, and M. Schoenauer. Proceedings of the 9th European Conference on Genetic
Programming, volume 3905 of Lecture Notes in Computer Science, page 61--72. Budapest, Hungary, Springer, (10 - 12 April 2006)