ULFVENS, J. Breeding habitat characteristics in a newly established population of the Mute Swan Cygnus olor on the Finnish west coast. Ornis Fennica, [S. l.], v. 70, n. 2, p. 106–109, 1993. Disponível em: https://ornisfennica.journal.fi/article/view/133371. Acesso em: 22 nov. 2024.