P. Nagendra and  S. Halder nee Dey and  S. Paul and  T. Datta,  Computation of Global Voltage Stability Margin in a Practical Power Network Incorporating  FACTS in the OPF Frame Work.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2012, vol. 67(7). 715 - 722
    [viewed 07 May 2024]. Available from: https://publications.waset.org/pdf/16915.