R. Poli, W. Langdon, and N. McPhee. Published via http://lulu.com and freely
available at
http://www.gp-field-guide.org.uk, (2008)(With contributions by J. R. Koza).
G. Wilson, and M. Heywood. IEEE CCECE 2002: IEEE Canadian Conference on
Electrical and Computer Engineering, 2, page 809--814. IEEE Press, (12-15 May 2002)
W. Langdon. Genetic Algorithms: Proceedings of the Sixth
International Conference (ICGA95), page 295--302. Pittsburgh, PA, USA, Morgan Kaufmann, (15-19 July 1995)
C. Janikow. Late breaking paper at Genetic and Evolutionary
Computation Conference (GECCO'2007), page 2503--2508. London, United Kingdom, ACM Press, (7-11 July 2007)
S. Chen, and C. Yeh. Fifth International Conference: Computing in Economics
and Finance, page 77. Boston College, MA, USA, (24-26 June 1999)Book of Abstracts.
D. Cho, and B. Zhang. Proceedings 4th International Symposium on Artificial
Life and Robotics, page 236--239. B-Con Plaza, Beppu, Oita, Japan, (19-22 January 1999)