J. Walker, and J. Miller. Genetic Programming 7th European Conference, EuroGP
2004, Proceedings, volume 3003 of LNCS, page 187--197. Coimbra, Portugal, Springer-Verlag, (5-7 April 2004)
J. Walker, and J. Miller. Proceedings of the 10th European Conference on Genetic
Programming, volume 4445 of Lecture Notes in Computer Science, page 261--270. Valencia, Spain, Springer, (11 - 13 April 2007)
J. Walker, and J. Miller. Proceedings of the 10th European Conference on Genetic
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J. Walker, and J. Miller. Evolvable Systems: From Biology to Hardware, 6th
International Conference, ICES 2005, Proceedings, volume 3637 of Lecture Notes in Computer Science, page 131--142. Sitges, Spain, Springer, (September 2005)