WASET
    Nayera E. El-Gharably and  Khaled S. El-Kilany and  Aziz E. El-Sayed,  Optimization Using Simulation of the Vehicle Routing Problem.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2013, vol. 78(6). 1236 - 1242
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/15351.