BERGMAN, G. The spring migration of the Long-tailed Duck and the Common Scoter in western Finland. Ornis Fennica, [S. l.], v. 51, n. 3–4, p. 129–145, 1974. Disponível em: https://ornisfennica.journal.fi/article/view/132867. Acesso em: 17 may. 2024.