José Carlos Becceneri Sandra Sandri E. F. Pacheco da Luz Using ant colony systems with pheromone dispersion in the traveling salesman problem. 333-341 2008 CCIA http://dx.doi.org/10.3233/978-1-58603-925-7-333 conf/ccia/2008 db/conf/ccia/ccia2008.html#BecceneriSL08