VETTER, Walther. Richard Wagner und die Griechen . Die Musikforschung, [S. l.], v. 6, n. 2, p. 111–126, 1953. DOI: 10.52412/mf.1953.H2.2738. Disponível em: https://mf.journals.qucosa.de/mf/article/view/2738. Acesso em: 14 mai. 2025.