ENEMAR, A.; HÖJMAN, S. G.; KLAESSON, P.; NILSSON, L. The relationship between census results and the breeding population of birds in subalpine birch forests. Ornis Fennica, [S. l.], v. 53, n. 1, p. 1–8, 1976. Disponível em: https://ornisfennica.journal.fi/article/view/132892. Acesso em: 23 nov. 2024.