K. Khlifi and  A. Haddouk and  M. Hlaili and  H. Mechergui ,  Harmonic Pollution Caused by Non-Linear Load: Analysis and Identification.   journal   = {International Journal of Energy and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2018, vol. 139(7). 510 - 517
    [viewed 18 November 2019]. Available from: https://publications.waset.org/pdf/10009299.