D. Corne, and J. Knowles. GECCO '07: Proceedings of the 9th annual conference on Genetic and evolutionary computation, page 773--780. New York, NY, USA, ACM, (2007)
Alfredo, Luis, C. Coello, R. Caballero, and J. Molina. GECCO '06: Proceedings of the 8th annual conference on Genetic and evolutionary computation, page 675--682. New York, NY, USA, ACM, (2006)