Zin Maw Tun and  Tun Lin Naing,  Double Loop Control of H-Bridge DC Chopper Fed Permanent Magnet DC Motor Drives Using Low Cost Hardware.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2018, vol. 143(11). 842 - 851
    [viewed 17 November 2019]. Available from: https://publications.waset.org/pdf/10009818.