C. Johnson. Genetic Programming, 12th European Conference, EuroGP
2009, Tübingen, Germany, April 15-17, 2009,
Proceedings, Volume 5481 von Lecture Notes in Computer Science, Seite 97--108. Springer, (2009)
L. Yaeger. Artificial Life III, Vol. XVII of SFI Studies in the
Sciences of Complexity, Santa Fe Institute, Seite 263--298. Los Alamos, New Mexico, Addison-Wesley, (1993)
R. Poli, W. Langdon, und 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).