DIRKSEN, Sjoerd; ESSELINK, Hans. Scandinavian/Baltic Mute Swans Cygnus olor in the Netherlands: movements under the influence of severe winter weather and their consequences. Wildfowl, [S. l.], p. 227, 2013. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154970. Acesso em: 13 feb. 2026.