PATTERSON, I J; GIROUX, J-F. Breeding success of Icelandic Pink-footed Geese Anser brachyrhynchus and Greylag Geese A. answer in different areas of Iceland in 1987 and 1988. Wildfowl, [S. l.], p. 13–17, 1990. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154057. Acesso em: 17 dec. 2025.