A. Agogino, K. Tumer, and R. Miikkulainen. GECCO'05: Proc. 7th Genetic and Evolutionary Computation Conf., page 1309--1316. Washington, DC, ACM Press, (2005)
H. Parunak, and S. Brueckner. AAMAS'06: Proc. 5th Int'l Jt. Conf. on
Autonomous Agents and Multiagent Systems, page 111--113. Hakodate, Japan, ACM Press, (2006)
D. Salda\ na-Jimenez, M. Rodr\'ıguez, J. Garc\'ıa-Vázquez, and A. Espinoza. Proceedings of the Confederated International Workshops and Posters on On the Move to Meaningful Internet Systems: ADI, CAMS, EI2N, ISDE, IWSSA, MONET, OnToContent, ODIS, ORM, OTM Academy, SWWS, SEMELS, Beyond SAWSDL, and COMBEK 2009, page 622--627. Berlin, Heidelberg, Springer-Verlag, (2009)