1. Banzhaf W, Nordin P, Keller RE, Francone FD (1998). Genetic Programming – An Introduction; On the Automatic Evolution of Computer Programs and its Applications. Morgan Kaufmann, San Mateo, California
2. Bonabeau E, Dorigo M, Theraulaz G (1999). Swarm Intelligence: From natural to artificial systems. Oxford University Press, Oxford
3. Brabazon A, O’Neill M (2006). Biologically Inspired Algorithms for Financial Modelling. Springer, Berlin
4. Brabazon A, Silva A, de Sousa TF, ONeill M, Matthews R, Costa E (2005) Investigating Strategic inertia using OrgSwarm. Informatica 29:125–141
5. Kennedy J, Eberhart R, Shi Y (2001). Swarm Intelligence. Morgan Kauff-man, San Mateo, California