WASET
    E. Farshidi and  N. Ahmadpoor,  A Continuous Time Sigma Delta Modulators Using CMOS Current Conveyors.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2011, vol. 54(6). 732 - 735
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/6452.