WASET
    Apinan Aurasopon and  Worawat Sa-ngiavibool,  Synchronization Technique for Random Switching Frequency Pulse-Width Modulation.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2008, vol. 15(3). 384 - 389
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/1915.