PAKARINEN, R.; SIIKAVIRTA, H.; HILDÉN, O. Alcids on Lake Ladoga – the old breeding records revisited. Ornis Fennica, [S. l.], v. 71, n. 3, p. 115–119, 1994. Disponível em: https://ornisfennica.journal.fi/article/view/133401. Acesso em: 25 nov. 2024.