GLUSHENKO, Y N; BOCHARNIKOV, V N. The current status of Whooper Swan Cygnus cygnus and Bewick’s Swan Cygnus bewickii populations in the Prichankayaskaya Lowland, USSR. Wildfowl, [S. l.], p. 77, 2013. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/155001. Acesso em: 17 dec. 2025.