1. [Banzhaf et al., 1998]_Wolfgang Banzhaf, Peter Nordin, Robert E. Keller, and Frank D. Francone. Genetic Programming — An Introduction. Morgan Kaufmann.
2. [Clergue et al., 2002]_Fitness distance correlation and problem difficulty for genetic programming. In GECCO 2002, pp 724–732, New York, 9–13 July 2002.
3. [Daida et al., 2001]_Jason M. Daida, et al.. What makes a problem GP-hard? Genetic Programming and Evolvable Machines, 2(2):165–191, June 2001.
4. A comparative analysis of selection schemes used in genetic algorithms. In G. J. E. Rawlins, editor, FOGA, pp 69–93. Morgan Kaufmann.
5. Terry Jones. One operator, one landscape. Technical Report SFI TR 95-02-025, Santa Fe Institute, January 1995.