L. Spector, J. Klein, and M. Keijzer. GECCO 2005: Proceedings of the 2005 conference on
Genetic and evolutionary computation, 2, page 1689--1696. Washington DC, USA, ACM Press, (25-29 June 2005)
L. Spector, and J. Klein. Genetic Programming Theory and Practice IV, volume 5 of Genetic and Evolutionary Computation, chapter 15, Springer, Ann Arbor, (11-13 May 2006)
L. Spector, and J. Klein. Genetic Programming Theory and Practice III, volume 9 of Genetic Programming, chapter 8, Springer, Ann Arbor, (12-14 May 2005)
R. Crawford-Marks, L. Spector, and J. Klein. Late Breaking Papers at the 2004 Genetic and
Evolutionary Computation Conference, Seattle, Washington, USA, (26 July 2004)
J. Klein, and L. Spector. GECCO '07: Proceedings of the 9th annual conference on
Genetic and evolutionary computation, 2, page 1628--1635. London, ACM Press, (7-11 July 2007)