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    Jae Hyung Noh and  Hang Geun Jeong,  Charge-Pump with a Regulated Cascode Circuit for Reducing Current Mismatch in PLLs.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2007, vol. 7(7). 1002 - 1004
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/3951.