Jamaludin MH, Wan Ismail WZ, Mohd Husini E. Photometric Analysis of Filament Type LED Lamp for HPSV Lamp Substitution in Conventional Road Lighting Luminaires . Semarak Proc. of Appl. Sci. Eng. Technol. [Internet]. 2025 Apr. 9 [cited 2025 Apr. 30];1(1):61-8. Available from: https://semarakilmu.my/index.php/spaset/article/view/64