Baek, Seung-Mook. “Determination of Amount of Allowable DERs by Analyzing Voltage Variations With Physical Distribution System Model”. International Journal of Advanced Science and Technology 29, no. 3 (February 27, 2020): 4248 - 4253. Accessed April 28, 2024. http://sersc.org/journals/index.php/IJAST/article/view/5180.