Spectral analysis of laser produced ZnO plasma - de Vero, Jeffrey C.; Vitug, Jaziel R.; Azurin, Xylene G.; Lopez, Rusty A.; Empizo, Melvin John F.; Dasallas, Lean I.; Garcia, Wilson O.; Sarmago, Roland V. (Proceedings of the Samahang Pisika ng Pilipinas, 2009)