F. Archetti, S. Lanzeni, E. Messina, and L. Vanneschi. GECCO 2006: Proceedings of the 8th annual conference
on Genetic and evolutionary computation, 1, page 255--262. Seattle, Washington, USA, ACM Press, (8-12 July 2006)
S. Barrett. Data Mining and Text Mining for Bioinformatics:
Proceedings of the European Workshop, page 6--7. Dubrovnik, Croatia, (22 September 2003)Invited talk.