M. Scheutz, and P. Schermerhorn. Proceedings of the 2005 conference on Genetic and
evolutionary computation, page 35--42. New York, NY, USA, ACM, (2005)
Y. Wang, J. Bryson, and S. Matthews. Artificial Life 14: Proceedings of the Fourteenth
International Conference on the Synthesis and
Simulation of Living Systems, The MIT Press, (July 2014)