BIEZAIS, H. Verzeichnis der Usina-Lieder. Scripta Instituti Donneriani Aboensis, [S. l.], v. 8, p. 190–195, 1976. DOI: 10.30674/scripta.67102. Disponível em: https://journal.fi/scripta/article/view/67102. Acesso em: 20 may. 2024.