Young-Seok Choi,  Empirical Mode Decomposition Based Multiscale Analysis of Physiological Signal.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2015, vol. 101(5). 1316 - 1319
    [viewed 06 March 2021]. Available from: https://publications.waset.org/pdf/10001603.