F. i Fabrega, and J. i Guiu. Proceedings of the Genetic and Evolutionary
Computation Conference, 1, page 797. Orlando, Florida, USA, Morgan Kaufmann, (13-17 July 1999)
M. Zahran, A. Wahab, and S. Shaheen. Proceedings of the Genetic and Evolutionary
Computation Conference, 1, page 814. Orlando, Florida, USA, Morgan Kaufmann, (13-17 July 1999)
J. Lathrop. Genetic Programming 1997: Proceedings of the Second
Annual Conference, page 370--379. Stanford University, CA, USA, Morgan Kaufmann, (13-16 July 1997)
Y. Shan, R. McKay, R. Baxter, H. Abbass, D. Essam, and N. Hoai. Proceedings of the 2004 IEEE Congress on Evolutionary
Computation, page 478--485. Portland, Oregon, IEEE Press, (20-23 June 2004)