Singh, Ashish Kumar, and Deepak Joshi. “Under-Reach Correction of Distance Relay in Transmission Lines”. IJRDO - Journal of Electrical And Electronics Engineering (ISSN: 2456-6055) 3, no. 7 (July 31, 2017): 01-10. Accessed December 9, 2019. https://ijrdo.org/index.php/eee/article/view/279.