T. White, and B. Pagurek. Proceedings of the Genetic and Evolutionary
Computation Conference, 2, page 1453--1454. Orlando, Florida, USA, Morgan Kaufmann, (13-17 July 1999)
R. Walker, and O. Miglino. Proceedings of the Genetic and Evolutionary
Computation Conference, 2, page 1422--1428. Orlando, Florida, USA, Morgan Kaufmann, (13-17 July 1999)