Kanakambaran, S., T. Obulesu, R. Sarathi, and B. Srinivasan. “Corona-Type Partial Discharge Detection in Power Transformers Using Fiber Bragg Gratings”. Power Research - A Journal of CPRI, Mar. 2017, pp. 75-78, https://node6473.myfcloud.com/~geosocin/CPRI/index.php/pr/article/view/138.