S. Gotshall, and T. Soule. GECCO '07: Proceedings of the 9th annual conference on
Genetic and evolutionary computation, 1, page 253--260. London, ACM Press, (7-11 July 2007)
S. Gotshall, K. Browder, J. Sampson, T. Soule, and R. Wells. Genetic Programming and Evolvable Machines, 8 (4):
355--380(December 2007)special issue on medical applications of Genetic and
Evolutionary Computation.