K. Slaný, and L. Sekanina. Proceedings of the 10th European Conference on Genetic
Programming, volume 4445 of Lecture Notes in Computer Science, page 311--320. Valencia, Spain, Springer, (11 - 13 April 2007)
L. Sekanina, T. Martinek, and Z. Gajda. Proceedings of the 2006 IEEE Congress on Evolutionary
Computation, page 9676--9683. Vancouver, IEEE Press, (6-21 July 2006)
L. Sekanina. SOFSEM 2004: Theory and Practice of Computer Science, volume 2932 of Lecture Notes in Computer Science, page 314--323. Czech Republic, Springer-Verlag, (24-30 January 2004)