WASET
    J. Mohan and  S. Maheshwari,  Two Active Elements Based All-Pass Section Suited for Current-Mode Cascading.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2013, vol. 73(1). 77 - 80
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/17135.