N. A. Osman, A. Ramli, and N. Tamat, “Design and Development of Ultra Violet LED Machine”, Politeknik & Kolej Komuniti Journal of Engineering and Technology, vol. 3, no. 1, pp. 9–19, Nov. 2018, Accessed: Nov. 22, 2024. [Online]. Available: https://app.mypolycc.edu.my/journal/index.php/PMJET/article/view/516