HÄKLI, E. Michael Branch 1940–2019. Finnisch-Ugrische Forschungen, [S. l.], v. 2020, n. 65, p. 206–211, 2020. DOI: 10.33339/fuf.99937. Disponível em: https://journal.fi/fuf/article/view/99937. Acesso em: 23 sep. 2021.