Shashank Gautam and  Pramod Sharma,  An Improved Design of Area Efficient Two Bit Comparator.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2016, vol. 119(11). 1409 - 1415
    [viewed 23 January 2022]. Available from: https://publications.waset.org/pdf/10006143.