Rosle, Muhammad Luqman Hafiz, et al. “Design of Cascaded H-Bridge Multilevel Inverter Topology for Integrated Portable Power Pack Application”.
Journal of Electronic Voltage and Application, vol. 3, no. 1, July 2022, pp. 69-79,
https://publisher.uthm.edu.my/ojs/index.php/jeva/article/view/10928.