Sơn, Nguyễn Hoài, Nguyễn Văn Nhờ, and Lê Văn Dương. “New PWM Switching Techniques for an Optimum Cascade 3 3 NPC Inverter Operation”. <i>Journal of Computer Science and Cybernetics</i> 28, no. 1 (June 21, 2012): 22–31. Accessed November 5, 2025. https://jcc.vast.vn/jcc/article/view/1062.