F. Binard, and A. Felty. Proceedings of the 10th annual Conference on Genetic and Evolutionary Computation (GECCO'08), page 1187--1194. New York, NY, USA, ACM, (2008)
T. Yu, and C. Clack. Late Breaking Papers at EuroGP'98: The First European Workshop on Genetic Programming, page 26--30. CSRP-98-10, The University of Birmingham, UK, (1998)
F. Binard, and A. Felty. Late breaking paper at the Conference on Genetic and Evolutionary Computation (GECCO'07), page 2415--2422. New York, NY, USA, ACM, (2007)