Arciaga, M.E., Ramos, H.J., Kasuya, T., Mendenilla, A.G. and Wada, M. 2004. Numerical calculation of the temperature distribution along a tungsten filament cathode to explain its breakage near its negative terminal. Proceedings of the Samahang Pisika ng Pilipinas, 22(1), SPP-2004-3B-04. URL: https://proceedings.spp-online.org/article/view/SPP-2004-3B-04.