HILDÉN, O.; KOSKIMIES, J. Effects of the Severe Winter of 1965/66 upon Winter Bird Fauna in Finland. Ornis Fennica, [S. l.], v. 46, n. 1, p. 22–31, 1969. Disponível em: https://ornisfennica.journal.fi/article/view/132755. Acesso em: 19 maj. 2024.