L. Luca, B. Stephen, and D. Pierpaolo. Computational Collective Intelligence: Semantic Web, Social Networks and Multiagent Systems First International Conference, ICCCI 2009, Wroclaw, Poland, volume 5796 of Lecture Notes in Artificial Intelligence, Springer, Berlin, (2009)
M. Lefley, and M. Shepperd. Genetic and Evolutionary Computation -- GECCO-2003, volume 2724 of LNCS, page 2477--2487. Chicago, Springer-Verlag, (12-16 July 2003)