J. B. Seo and  K. J. Kim and  S. W. Nam,  Nonlinear Acoustic Echo Cancellation Using Volterra Filtering with a Variable Step-Size GS-PAP Algorithm.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2009, vol. 33(9). 1659 - 1662
    [viewed 07 May 2024]. Available from: https://publications.waset.org/pdf/13166.