Batin Latif Aylak and  Bernd Noche,  Ultra-Light Overhead Conveyor Systems for Logistics Applications.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2013, vol. 79(7). 2042 - 2044
    [viewed 24 May 2022]. Available from: https://publications.waset.org/pdf/16435.