Hilario, P.L., Mancenido, D.L., Villangca, M.J. and Tapang, G.A. 2009. Controlled optical lensing in ferrofluids. Proceedings of the Samahang Pisika ng Pilipinas, 27(1), SPP-2009-4A-04. URL: https://proceedings.spp-online.org/article/view/SPP-2009-4A-04.