KÁCSOR, G.; ŠPÁNIK, P.; DUDRÍK, J.; LUFT, M.; SZYCHTA, E. Principles of Operation of Three-level Phase Shift Controlled Converter. Elektronika ir Elektrotechnika, [S. l.], v. 82, n. 2, p. 69-74, 2008. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/11058. Acesso em: 27 sep. 2022.