E. Vallejo, and F. Ramos. Genetic Programming, Proceedings of EuroGP'2001, volume 2038 of LNCS, page 192--203. Lake Como, Italy, Springer-Verlag, (18-20 April 2001)
M. Kamitani, and T. Ae. International Journal of Technology, Policy and
Management, 4 (4):
337--352(March 2005)Special Issue on Developments in Decision
Technologies.
M. Hetland, and P. Saetrom. Proceedings of the 4th International Conference on
Recent Advances in Soft Computing, page 182--188. Nottingham, United Kingdom, The Nottingham Trent University, (12-13 December 2002)