ROBERTSON, Jeremy; BERG, Åke. Status and population changes of farmland birds in southern Sweden. Ornis Svecica, Lund, Sweden, v. 2, n. 3–4, p. 119–130, 1992. DOI: 10.34080/os.v2.23054. Disponível em: https://journals.lub.lu.se/os/article/view/23054. Acesso em: 25 apr. 2024.