Anh Q. D. Nguyen, Vinh H. Nguyen. “Effects of Red Y2O3:Eu3+ Phosphor on the Color Rendering Ability of White LED Lamps”. The University of Danang - Journal of Science and Technology, vol. 12, no. 109, Dec. 2016, pp. 16-19, https://jst-ud.vn/jst-ud/article/view/1330.