Effects of Green - Emitting Phosphor (La,Ce,Tb)PO_4:Ce:Tb on Luminous Flux and Color Quality of White LED Lamps Authors Nguyen Thi Phuong Thao, Phan Xuan Le, Le Van Tho, Miroslav Voznak, Nguyen Doan Quoc Anh Publisher Advances in Electrical and Electronic Engineering Publication year 2017