NGO, Bac Bien; NGUYEN, Minh Khai; NGO, Van Thuyen. Switched-Capacitor Nine-Level Inverter. Old Journal, [S. l.], n. 121, p. 27–32, 2017. Disponível em: https://jst.vn/index.php/old/article/view/886. Acesso em: 2 aug. 2025.