SUSMITA BABURAO TONAPE, et al. “DESIGN OF EARTH GRID FOR A 132 33 KV SUBSTATION: A CASE STUDY”. International Journal of Innovations in Engineering Research and Technology, vol. 6, no. 1, Mar. 2021, pp. 1-6, https://repo.ijiert.org/index.php/ijiert/article/view/1776.