WASET
    N. Janjamraj and  A. Oonsivilai,  Harmonic Elimination of Hybrid Multilevel Inverters Using Particle Swarm Optimization.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    December 2012, vol. 72(12). 1461 - 1466
    [viewed 28 March 2024]. Available from: https://publications.waset.org/pdf/7046.