WASET
    Moataz M. Naguib and  Hatem Khater and  A. Baith Mohamed,  Improved MARS Ciphering Using a Metamorphic-Enhanced Function.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2014, vol. 85(1). 7 - 10
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/9997048.