WASET
    Chia-Chen Wei and  Pack Hsieh and  Jeffrey Chen,  Automatic Adjustment of Thresholds via Closed-Loop Feedback Mechanism for Solder Paste Inspection.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2019, vol. 155(11). 726 - 730
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/10010919.