Nandini, G., and A. Senthilnathan. “HARMONIC REDUCTION IN BLDC MOTOR USING SEVENLEVEL CASCADED MULTILEVEL INVERTER”. Pakistan Journal of Biotechnology, vol. 13, no. special issue 1, Apr. 2021, pp. 203-7, https://pjbt.org/index.php/pjbt/article/view/276.