M. Nageswara Rao and  V. S. N. K. Chaitanya and  P. Vijaya Haritha,  Study of Hydrophobicity Effect on 220kV Double Tension Insulator String Surface Using Finite Element Method.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2020, vol. 159(3). 70 - 75
    [viewed 12 August 2020]. Available from: https://publications.waset.org/pdf/10011111.