WASET
    Wojciech Rejchel,  Ranking - Convex Risk Minimization.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2009, vol. 32(8). 1949 - 1955
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/6534.