Acuña, J.T. and Solis, M.R. 2011. Geodesics in Taub and Kasner planar symmetric spacetimes. Proceedings of the Samahang Pisika ng Pilipinas, 29(1), SPP2011-3C-2. URL: https://proceedings.spp-online.org/article/view/SPP2011-3C-2.