WASET
    T. Spiegel and  J. Siegmann and  C. F. Durach,  Flexible Development and Calculation of Contract Logistics Services.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2014, vol. 87(3). 658 - 665
    [viewed 09 May 2024]. Available from: https://publications.waset.org/pdf/9997645.