J. Yang, A. Tiyyagura, F. Chen, and V. Honavar. Proceedings of the Genetic and Evolutionary
Computation Conference, 2, page 1800. Orlando, Florida, USA, Morgan Kaufmann, (13-17 July 1999)
S. Ho, H. Chen, and L. Shu. Proceedings of the Genetic and Evolutionary
Computation Conference, 2, page 1567--1572. Orlando, Florida, USA, Morgan Kaufmann, (13-17 July 1999)