Francisco, M.C., Arevalo, P.S., Ramirez, L.P., Ebreo, F.M., Paguio, M.C. and Garcia, W.O. 2006. Laser induced breakdown spectroscopy of copper in air. Proceedings of the Samahang Pisika ng Pilipinas, 24(1), SPP-2006-PA-08. URL: https://proceedings.spp-online.org/article/view/SPP-2006-PA-08.