Mohammad Hasan Raouf and  Ahmad Rouhani and  Mohammad Abedini and  Ebrahim Rasooli Anarmarzi,  Power System Damping Using Hierarchical Fuzzy Multi- Input PSS and Communication Lines Active Power Deviations Input and SVC .   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2013, vol. 84(12). 1773 - 1778
    [viewed 27 September 2020]. Available from: https://publications.waset.org/pdf/9997269.