Ram Kumar Soni and  Alok Jain and  Rajiv Saxena,  New Efficient Iterative Optimization Algorithm to Design the Two Channel QMF Bank.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    December 2008, vol. 24(12). 2904 - 2908
    [viewed 19 April 2021]. Available from: https://publications.waset.org/pdf/3819.