WASET
    Young-Seok Choi,  Affine Projection Adaptive Filter with Variable Regularization.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2016, vol. 109(1). 133 - 136
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/10003880.