Kittur, J., H. V. Saikumar, and S. V. Sharath Raj. “Comparative Analysis of Accelerating Power Input and Speed Input Robust Power System Stabilizers”. Power Research - A Journal of CPRI, Dec. 2014, pp. 663-72, https://node6473.myfcloud.com/~geosocin/CPRI/index.php/pr/article/view/764.