M. J. Tahir, Badri. A. Bakar, M. Alam, and M. S. Mazliham. 2018. “A Comprehensive Review: Optimal Capacitor Placement and Sizing in a Distribution System”. Journal of Engineering Technology 6 (1): 31-36. https://ejournal.unikl.edu.my/index.php/jet/article/view/281.