Shih-Chuan Yeh, and Ju-Lin Lu De Lin. “Potential for Energy Conservation by a Hybrid Natural Lighting System With LED Illumination”. Journal of Solar Energy Research Updates 1, no. 1 (September 12, 2014): 31–38. Accessed July 3, 2024. https://zealpress.com/jms/index.php/jseru/article/view/9.