GAlib
A C++ Library of Genetic Algorithm Components
http://lancet.mit.edu/ga/
Applied Math & Computer Science Lab
http://www.lwebzem.com/cgi-bin/res/genetic_algorithms.cgi
Introduction to Genetic Algorithms
http://www.obitko.com/tutorials/genetic-algorithms/index.php
A Field Guide to Genetic Programming
http://www.gp-field-guide.org.uk/p