Steve Hung-Lung Tu and  Chu-Tse Lee,  A PWM Controller with Multiple-Access Table Look-up for DC-DC Buck Conversion.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2009, vol. 30(6). 1321 - 1324
    [viewed 29 January 2020]. Available from: https://publications.waset.org/pdf/5816.