I. Yoshihara, T. Aoyama, и M. Yasunaga. Proceedings of the 2000 Congress on Evolutionary
Computation CEC00, стр. 1475--1481. La Jolla Marriott Hotel La Jolla, California, USA, IEEE Press, (6-9 July 2000)
M. Santini, и A. Tettamanzi. Genetic Programming, Proceedings of EuroGP'2001, том 2038 из LNCS, стр. 361--370. Lake Como, Italy, Springer-Verlag, (18-20 April 2001)
N. Nikolaev, и H. Iba. Proceedings of the Genetic and Evolutionary
Computation Conference (GECCO-2001), стр. 89--96. San Francisco, California, USA, Morgan Kaufmann, (7-11 July 2001)