Albia, J.R., Corpuz, R.D., Bugna, J.G., Pascua, C.S., Arcilla, C.A. and Sarmago, R.V. 2010. Effect of CuO on the morphology and gas sensing property of ZnO. Proceedings of the Samahang Pisika ng Pilipinas, 28(1), SPP-2010-4B-01. URL: https://proceedings.spp-online.org/article/view/SPP-2010-4B-01.