HALL, Colette; GLANVILLE, Jacqueline; BOLAND, Helen; EINARSSON, Ólafur; MCELWAINE, Graham; HOLT, Chas A; SPRAY, Christopher J; REES, Eileen C. Population size and breeding success of Icelandic Whooper Swans Cygnus cygnus: results of the 2010 international census. Wildfowl, [S. l.], p. 73–96, 2012. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/153572. Acesso em: 16 dec. 2025.