Y. Zhang, and P. Rockett. GECCO 2005: Proceedings of the 2005 conference on
Genetic and evolutionary computation, 1, page 795--802. Washington DC, USA, ACM Press, (25-29 June 2005)
Y. Zhang, and P. Rockett. Multi-Objective Machine Learning, volume 16 of Studies in Computational Intelligence, chapter 4, Springer, Invited chapter.(2006)