WASET
    Jan Doutreloigne,  Multi-Level Pulse Width Modulation to Boost the Power Efficiency of Switching Amplifiers for Analog Signals with Very High Crest Factor.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2018, vol. 138(6). 377 - 381
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10009044.