Rami, Tapan M., and Dipak Mehta. “Quantitative Analysis Ageing Status of Insulation of High Voltage Motors by Polarization – Depolarization Current Measurements”. Power Research - A Journal of CPRI 9, no. 1 (March 15, 2013): 157–162. Accessed April 25, 2024. https://node6473.myfcloud.com/~geosocin/CPRI/index.php/pr/article/view/578.