Cabatbat, J.J.T., Cortez, A. and Perez, G.J. 2007. Network analysis of SMS messages based on Filipino conversations. Proceedings of the Samahang Pisika ng Pilipinas, 25(1), SPP-2007-PA-27. URL: https://proceedings.spp-online.org/article/view/SPP-2007-PA-27.