E. Jordaan, A. Kordon, L. Chiang, and G. Smits. Parallel Problem Solving from Nature - PPSN VIII, volume 3242 of LNCS, page 522--531. Birmingham, UK, Springer-Verlag, (18-22 September 2004)
D. Jakobović, and L. Budin. Proceedings of the 9th European Conference on Genetic
Programming, volume 3905 of Lecture Notes in Computer Science, page 73--84. Budapest, Hungary, Springer, (10 - 12 April 2006)
D. Jakobović, L. Jelenković, and L. Budin. Proceedings of the 10th European Conference on Genetic
Programming, volume 4445 of Lecture Notes in Computer Science, page 321--330. Valencia, Spain, Springer, (11 - 13 April 2007)