E. de Jong, R. Watson, and J. Pollack. Proceedings of the Genetic and Evolutionary
Computation Conference (GECCO-2001), page 11--18. San Francisco, California, USA, Morgan Kaufmann, (7-11 July 2001)
S. Bleuler, M. Brack, L. Thiele, and E. Zitzler. Proceedings of the 2001 Congress on Evolutionary
Computation CEC2001, page 536--543. COEX, World Trade Center, 159 Samseong-dong,
Gangnam-gu, Seoul, Korea, IEEE Press, (27-30 May 2001)