C. Hafner, and J. Frohlich. Proceedings of the Congress on Evolutionary
Computation, 1, page 287--294. Mayflower Hotel, Washington D.C., USA, IEEE Press, (6-9 July 1999)
C. Setzkorn, and R. Paton. Proceedings of the International Symposium on
Knowledge Exploration in Life Science Informatics,
KELSI 2004, volume 3303 of Lecture Notes in Artificial Inteligence, page 151--160. Milan, Italy, Springer, (25-26 November 2004)