WASET
    Seung Woo Lee and  So Jeong Nam and  Jai-Kyung Lee,  A Real-time 4M Collecting Method for Production Information System.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2012, vol. 64(4). 803 - 806
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/8812.