F. N. Budiman and  Y. Khan and  A. A. Khan and  A. Beroual and  N. H. Malik and  A. A. Al-Arainy,  Dependence of Particle Initiated PD Characteristics on Size and Position of Metallic Particle Adhering to the Spacer Surface in GIS.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2013, vol. 75(3). 349 - 353
    [viewed 03 June 2020]. Available from: https://publications.waset.org/pdf/14800.