Licup, A.J.M. 2006. Prisoner’s Dilemma game as a model for cooperation dynamics on scale-free networks with small-world properties. Proceedings of the Samahang Pisika ng Pilipinas, 24(1), SPP-2006-2C-04. URL: https://proceedings.spp-online.org/article/view/SPP-2006-2C-04.