Lava, H.C.M., Perez, G.J. and Bantang, J.Y. 2010. Optimum average headway time for stochastic transport system. Proceedings of the Samahang Pisika ng Pilipinas, 28(1), SPP-2010-5C-06. URL: https://proceedings.spp-online.org/article/view/SPP-2010-5C-06.