WASET
    Yin-Yann Chen,  An Analytical Framework for Multi-Site Supply Chain Planning Problems.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2010, vol. 41(5). 476 - 482
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/591.