Young-Seok Choi,  Combination Scheme of Affine Projection Algorithm Filters with Complementary Order.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2014, vol. 91(7). 1171 - 1174
    [viewed 17 October 2021]. Available from: https://publications.waset.org/pdf/9999105.