Quach Thanh Hai, Le Huynh Ly and Do Duc Tri (2017) “Carrier pwm with multi control-voltages for five level hybrid inverter”, Journal of Technical Education Science, 12(1), pp. 15–21. Available at: https://www.jte.edu.vn/index.php/jte/article/view/366 (Accessed: 7 April 2026).