K. Sharman, and A. Esparcia-Alcazar. Proceedings of the Second International Conference on
Natural Algorithms in Signal Processing, NASP'93, Essex University, UK, (15-16 November 1993)
K. Sharman, A. Esparcia Alcazar, and Y. Li. First International Conference on Genetic Algorithms
in Engineering Systems: Innovations and Applications,
GALESIA, 414, page 473--480. Sheffield, UK, IEE, (12-14 September 1995)