J. Tilford, N. Payakachat, E. Kovacs, J. Pyne, W. Brouwer, T. Nick, J. Bellando, und K. Kuhlthau. PharmacoEconomics, 30 (8):
661-679(August 2012)GR: R01MH089466/MH/NIMH NIH HHS/United States; GR: UA3MC11054/PHS HHS/United States; JID: 9212404; NIHMS399399; OID: NLM: NIHMS399399; OID: NLM: PMC3423960; PMCR: 2013/08/01 00:00; ppublish.
G. Hornby, und J. Pollack. Proceedings of the Genetic and Evolutionary
Computation Conference (GECCO-2001), Seite 868--875. San Francisco, California, USA, Morgan Kaufmann, (7-11 July 2001)
D. Cho, und B. Zhang. Proceedings 4th International Symposium on Artificial
Life and Robotics, Seite 236--239. B-Con Plaza, Beppu, Oita, Japan, (19-22 January 1999)