Asfar Ali Khan and  Ekram Husain,  Porcelain Insulator Performance under Different Condition of Installation around Aligarh.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2013, vol. 79(7). 933 - 937
    [viewed 08 March 2021]. Available from: https://publications.waset.org/pdf/16494.