Gayadhar Panda and  P. K. Rautraya,  Gravitational Search Algorithm (GSA) Optimized SSSC Based Facts Controller to Improve Power System Oscillation Stability.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2014, vol. 86(2). 408 - 415
    [viewed 30 May 2020]. Available from: https://publications.waset.org/pdf/9998017.