A. Sarafopoulos. Genetic Programming, Proceedings of EuroGP'2001, том 2038 из LNCS, стр. 176--191. Lake Como, Italy, Springer-Verlag, (18-20 April 2001)
U. O'Reilly, и F. Oppacher. Proceedings of the 1995 World Conference on
Evolutionary Computation, 2, стр. 573--578. Perth, Australia, IEEE Press, (29 November - 1 December 1995)