Martin Roth and  Axel Klarmann and  Bogdan Franczyk,  Future Logistics - Challenges, Requirements and Solutions for Logistics Networks.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2013, vol. 82(10). 1973 - 1978
    [viewed 27 September 2020]. Available from: https://publications.waset.org/pdf/17060.