MOHAMADIAN, S.; KHANZADE, M. H. A Five-Level Current-Source Inverter for Grid-Connected or High-Power Three-Phase Wound-Field Synchronous Motor Drives. Engineering, Technology & Applied Science Research, Greece, v. 6, n. 5, p. 1139–1148, 2016. DOI: 10.48084/etasr.695. Disponível em: https://www.etasr.com/index.php/ETASR/article/view/695. Acesso em: 28 nov. 2021.