Abbas Al-Refaie,  Optimal Performance of Plastic Extrusion Process Using Fuzzy Goal Programming.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2017, vol. 125(5). 920 - 926
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10006890.