FERNS, P N; GREEN, G H. Observations of Pink-footed and Barnacle Geese in the Kong Oscar Fjord region of north-east Greenland, 1974. Wildfowl, [S. l.], p. 131–138, 1975. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154296. Acesso em: 18 dec. 2025.