Widharma, I. S., N. Sunaya, I. G. P. Arka, and M. Sajayasa. “Effect of Using Ground Wire to Lightning Surge Interference at 20 KV Medium Voltage Distribution System Based on Genetics Algorithm”. International Research Journal of Engineering, IT & Scientific Research, vol. 3, no. 3, May 2017, pp. 65-76, https://sloap.org/journals/index.php/irjeis/article/view/565.