HELLE, P.; PULLIAINEN, E. On the efficiency of the line transect method: a study based on nest searching. Ornis Fennica, [S. l.], v. 60, n. 2, p. 35–41, 1983. Disponível em: https://ornisfennica.journal.fi/article/view/133121. Acesso em: 23 nov. 2024.