Jami Sridevi, V. Usha Rani. 2020. “Congestion Management With Static Voltage Stability Index Approach Incorporated With SVC and TCSC Using Cat-Firefly Algorithm in Deregulated Power System ”. International Journal of Advanced Science and Technology 29 (04), 3078 -. http://sersc.org/journals/index.php/IJAST/article/view/24137.