FERGUSON, David A. Waterfowl wintering, resting and breeding areas of the south-west Caspian lowlands. Wildfowl, [S. l.], v. 23, p. 5–24, 1972. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154904. Acesso em: 19 apr. 2026.