Mhand Hifi and  Hedi Mhalla,  The Knapsack Sharing Problem: A Tree Search Exact Algorithm.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2010, vol. 42(6). 1115 - 1118
    [viewed 25 January 2020]. Available from: https://publications.waset.org/pdf/12585.