Cannen, R.C., Villena, J.C., Pascual, R.A. and Ramos, H.J. 1988. The NIP glow discharge facility. Proceedings of the Samahang Pisika ng Pilipinas, 7(1), SPP-1988-PP-02. URL: https://proceedings.spp-online.org/article/view/SPP-1988-PP-02.