John M. Ikome and  Martha E. Ikome and  Therese Van Wyk,  A Classical Method of Optimizing Manufacturing Systems Using a Number of Industrial Engineering Techniques.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2017, vol. 130(10). 2463 - 2466
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10008052.