M. Suresh Kumar and  K. Ramani,  Comparative Review of Modulation Techniques for Harmonic Minimization in Multilevel Inverter.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2014, vol. 96(12). 1938 - 1945
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/10001824.