C. Huang. Proceedings of the Genetic and Evolutionary
Computation Conference (GECCO-2001), page 367--374. San Francisco, California, USA, Morgan Kaufmann, (7-11 July 2001)
C. Ryan, H. Majeed, and A. Azad. Genetic and Evolutionary Computation -- GECCO-2004,
Part II, volume 3103 of Lecture Notes in Computer Science, page 654--665. Seattle, WA, USA, Springer-Verlag, (26-30 June 2004)