HAAPANEN, A.; ULMANEN, I.; VALSTE, J. Observations on the bird fauna in Koitilaiskaira (Finnish Lapland). Ornis Fennica, [S. l.], v. 43, n. 2, p. 45–54, 1966. Disponível em: https://ornisfennica.journal.fi/article/view/132716. Acesso em: 14 may. 2024.