G. Chandana Sushma and  T. R. Jyothsna,  A Genetic Algorithm Approach Considering Zero Injection Bus Constraint Modeling for Optimal Phasor Measurement Unit Placement .   journal   = {International Journal of Energy and Power Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2018, vol. 143(11). 800 - 806
    [viewed 16 April 2024]. Available from: https://publications.waset.org/pdf/10009744.