GARDARSSON, Arnthor; SKARPHEDISSON, Kristinn H. A census of the Icelandic Whooper Swan population. Wildfowl, [S. l.], v. 35, p. 37–47, 1984. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/155390. Acesso em: 17 dec. 2025.