FRIMER, Ole. Comparative behaviour of sympatric moulting populations of Common Eider Somateria mollissima and King Eider S. spectabilis in central West Greenland. Wildfowl, [S. l.], p. 129–139, 1995. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154661. Acesso em: 17 dec. 2025.