PULLIAINEN, E.; TUOMAINEN, J. On the nesting biology of the Two-barred Crossbill Loxia leucoptera in NE Finland. Ornis Fennica, [S. l.], v. 55, n. 4, p. 180–182, 1978. Disponível em: https://ornisfennica.journal.fi/article/view/132993. Acesso em: 23 nov. 2024.