WASET
    Tarek Elhasia and  Bernd Noche and  Lima Zhao,  Simulation of a Sustainable Cement Supply Chain; Proposal Model Review.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2013, vol. 75(3). 418 - 426
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/6630.