GA Hard Problems. - Bart Rylander; James A. Foster (GECCO, 2000)

Quantum Genetic Algorithms. - Bart Rylander; Terence Soule; James A. Foster; Jim Alves-Foss (GECCO, 2000)

Computational Complexity, Genetic Programming, and Implications. - Bart Rylander; Terence Soule; James A. Foster (EuroGP, 2001)