WASET
    M. A. Abd-Allah and  A. Said and  Ebrahim A. Badran,  High-Frequency Spectrum Analysis of VFTO Generated inside Gas Insulated Substations.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2013, vol. 79(7). 904 - 911
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/16442.