KORHONEN, M. Paavo Ravila 1902–74. Finnisch-Ugrische Forschungen, [S. l.], v. 1975, n. 41, p. 351–358, 1975. DOI: 10.33339/fuf.110204. Disponível em: https://journal.fi/fuf/article/view/110204. Acesso em: 27 may. 2024.