WASET
     M. R. Dolatian and  A. Jalilian,   Voltage Sag Effect on Three Phase Five Leg Transformers .   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2007, vol. 4(4). 611 - 616
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/5935.