WASET
    M. Nassereddine and  A. Hellany and  M. Nagrial and  J. Rizk,  Earth Grid Safety Consideration: Civil Upgrade Works for an Energised Substation.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    December 2012, vol. 72(12). 1514 - 1517
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/3142.