Vo, T. B. T., T. B. Tran, N. N. Phan, N. L. Pham, T. S. N. Tong, and V. T. Le. “Effects of Color Led Light Intensities and Different Photoperiod Regimes on Growth of Hydroponic Lettuce (Latuca Sativa L.)”. CTU Journal of Innovation and Sustainable Development, no. 02, Feb. 2016, pp. 1-7, doi:10.22144/ctu.jen.2016.008.