S. Sendilkumar and  B. L. Mathur and  Joseph Henry,  Differential Protection for Power Transformer Using Wavelet Transform and PNN.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2010, vol. 39(3). 564 - 570
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/9442.