BURTON, P J K. Brent Geese in western Europe during the winters of 1962-63 and 1963-64. Wildfowl, [S. l.], v. 16, p. 4, 1965. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/155152. Acesso em: 5 apr. 2026.