SMITH, A Adam. Seasonal trends in observations of raptors in the central Swedish mountains. Ornis Svecica, Lund, Sweden, v. 6, n. 3, p. 123–127, 1996. DOI: 10.34080/os.v6.22989. Disponível em: https://journals.lub.lu.se/os/article/view/22989. Acesso em: 4 may. 2024.