Kanyakumari, M., and R. S. Shivakumara Aradhya. “Optimization of Grading Ring of 624 KV Zinc Oxide Surge Arrester Using Finite Element Technique”. Power Research - A Journal of CPRI, Mar. 2012, pp. 1–8, https://cprijournal.in/index.php/pr/article/view/655.