VIKSNE, J.; JANAUS, M. Breeding success of the Black-headed Gull Larus ridibundus in relation to the nesting time. Ornis Fennica, [S. l.], v. 57, n. 1, p. 1–10, 1980. Disponível em: https://ornisfennica.journal.fi/article/view/133025. Acesso em: 23 nov. 2024.