Kácsor, G., Špánik, P., Dudrík, J., Luft, M., & Szychta, E. (2008). Principles of Operation of Three-level Phase Shift Controlled Converter. Elektronika Ir Elektrotechnika, 82(2), 69-74. Retrieved from https://eejournal.ktu.lt/index.php/elt/article/view/11058