NYGÃ¥RD, Torgeir; FRANTZEN, Bjørn; Å VAžAS, Saulius. Steller’s Eiders Polysticta stelleri wintering in Europe: numbers, distribution and origin. Wildfowl, [S. l.], p. 140–156, 1995. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154659. Acesso em: 16 dec. 2025.