Mohamed A. El-Kady and  Badr M. Alshammari,  Assessment of Performance Measures of Large-Scale Power Systems.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2011, vol. 59(11). 1433 - 1440
    [viewed 13 April 2021]. Available from: https://publications.waset.org/pdf/2987.