WASET
    S. Pathomsiri and  P. Sukaboon,  Determination of a Fair Price for Blood Transportation by Applying the Vehicle Routing Problem: A Case for National Blood Center, Thailand.   journal   = {International Journal of Humanities and Social Sciences}, [online]. World Academy of Science, Engineering and Technology.
    February 2013, vol. 74(2). 452 - 457
    [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/6749.