Chillali Abdelhakim,  Cryptography Over Elliptic Curve Of The Ring Fq[e], e4 = 0.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    June 2011, vol. 54(6). 917 - 919
    [viewed 22 November 2019]. Available from: https://publications.waset.org/pdf/125.