M. Salah, I. Ayed, and A. Mitiche. VISAPP (1), page 535-538. INSTICC - Institute for Systems and Technologies of Information, Control and Communication, (2008)
A. Salman, K. Mehrotra, and C. Mohan. Proceedings of the Genetic and Evolutionary
Computation Conference, 1, page 564--571. Orlando, Florida, USA, Morgan Kaufmann, (13-17 July 1999)
H. Fekih, L. Ayed, and S. Merz. SAC '06: Proceedings of the 2006 ACM symposium on Applied computing, page 1840--1844. New York, NY, USA, ACM Press, (2006)