Gu Wei and  Gao Wei,  Design of OTA with Common Drain and Folded Cascade Used in ADC.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2012, vol. 67(7). 630 - 632
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/13355.