Legara, E.T., Litong-Palima, M. and Saloma, C. 2004. Behavior of an evolving business network in a social network. Proceedings of the Samahang Pisika ng Pilipinas, 22(1), SPP-2004-PB-06. URL: https://proceedings.spp-online.org/article/view/SPP-2004-PB-06.