WASET
    Nor Asrina Binti Ramlee,  Detection of Voltage Sag and Voltage Swell in Power Quality Using Wavelet Transforms.   journal   = {International Journal of Energy and Power Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2017, vol. 127(7). 904 - 909
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10007639.