PEARCE, John M; ESLER, Daniel; DEGTYAREV, Andrei G. Nesting ecology of Spectacled Eiders Somateria fischeri on the Indigirka River Delta, Russia. Wildfowl, [S. l.], p. 110–123, 1998. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154611. Acesso em: 17 dec. 2025.