WEI, ZHE, HAITAO ZHANG, JINLONG GONG, YI QIANG, and FADHLIYAH MUHAMMAD YUSUF. 2022. “APPROACH TO ADJUSTING LAMPS’ HEIGHTS AND ANGLES: DESIGN AND IMPLEMENTATION OF AN ELEVATING DEVICE FOR ILLUMINATION IN SLEDGE TESTS”. Journal of Engineering Studies and Research 28 (1):81-89. https://jesr.ub.ro/1/article/view/321.