WASET
    A. Hellany and  M.Nagrial and  M. Nassereddine and  J. Rizk,  Safety Compliance of Substation Earthing Design.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    December 2011, vol. 60(12). 1714 - 1718
    [viewed 16 April 2024]. Available from: https://publications.waset.org/pdf/240.