WASET
    Jing Wu and  Wei Lv and  Yibing Li and  Yuanfan You,  A Mixing Matrix Estimation Algorithm for Speech Signals under the Under-Determined Blind Source Separation Model.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2019, vol. 150(6). 412 - 416
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/10010468.