R. Battiti and M. Protasi, Reactive local search for the maximum clique problem, Algorithmica, vol.29, issue.4, pp.610-637, 2001.

I. Bomze, M. Budinich, P. Pardalos, and M. Pelillo, The maximum clique problem, Handbook of Combinatorial Optimization, vol.4, 1999.

M. Dorigo, Optimization, Learning and Natural Algorithms, 1992.

M. Dorigo, G. D. Caro, and L. M. Gambardella, Ant algorithms for discrete optimization, Artificial Life, vol.5, issue.2, pp.137-172, 1999.

M. Dorigo and L. M. Gambardella, Ant colony system: A cooperative learning approach to the traveling salesman problem, IEEE Transactions on Evolutionary Computation, vol.1, issue.1, pp.53-66, 1997.

E. Marchiori, Genetic, iterated and multistart local search for the maximum clique problem, Applications of Evolutionary Computing, Proceedings of EvoWork-shops2002: EvoCOP, EvoIASP, EvoSTim, vol.2279, pp.112-121, 2002.

C. Solnon, Ants can solve constraint satisfaction problems, IEEE Transactions on Evolutionary Computation, vol.6, issue.4, pp.347-357, 2002.

C. Solnon, Boosting ACO with a preprocessing step, Applications of Evolutionary Computing, Proceedings of EvoWorkshops2002: EvoCOP, EvoIASP, EvoSTim, vol.2279, pp.161-170, 2002.

T. Stützle and H. H. Hoos, MAX ?MIN Ant System, Journal of Future Generation Computer Systems, vol.16, pp.889-914, 2000.