Vergara, J.A.O. and Culaba, I.B. 2008. Design and fabrication of DC planar magnetron using concentric annular ceramic magnets. Proceedings of the Samahang Pisika ng Pilipinas, 26(1), SPP-2008-3B-01. URL: https://proceedings.spp-online.org/article/view/SPP-2008-3B-01.