[1]
K. Sun Yoo, S. Young Lee, D. Hoon Hyun, and B. Jo Jung, “Study of Illumination Optical System to Control Light Pollution due to Night Lighting”, IJET, vol. 7, no. 3.34, pp. 516–520, Sep. 2018, doi: 10.14419/ijet.v7i3.34.19371.