Kotian, Shashidhara M., Sreenadh Batchu, and Shubhanga K. N. “Sub-Synchronous Resonance through Torsional Mode Interactions: An Analysis”. Power Research - A Journal of CPRI 9, no. 1 (March 14, 2013): 89–96. Accessed April 29, 2024. https://node6473.myfcloud.com/~geosocin/CPRI/index.php/pr/article/view/340.