Yash Pal and  A.Swarup and  Bhim Singh,  A Control Strategy Based on UTT and ISCT for 3P4W UPQC.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2011, vol. 51(3). 372 - 377
    [viewed 24 May 2022]. Available from: https://publications.waset.org/pdf/200.