Lei Lei and  Chao Wang and  Xin Liu,  Discrete Wavelet Transform Decomposition Level Determination Exploiting Sparseness Measurement.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2013, vol. 81(9). 1182 - 1185
    [viewed 18 April 2024]. Available from: https://publications.waset.org/pdf/16666.