Vipul J. Anghan, Purvi B. Anghan, Chandni M. Vora, and Archan B. Patel. “Reduction in Total Harmonic Distortion Using Cascaded H-Bridge Multilevel Inverter Using Amplitude Modulation Technique”. International Journal of Advance Engineering and Research Development (IJAERD), vol. 2, no. 4, Apr. 2015, pp. 319-25, https://ijaerd.org/index.php/IJAERD/article/view/637.