KARLSSON, Thomas. Number of gulls and corvids on a refuse dump. Ornis Svecica, Lund, Sweden, v. 13, n. 2–3, p. 67–73, 2003. DOI: 10.34080/os.v13.22809. Disponível em: https://journals.lub.lu.se/os/article/view/22809. Acesso em: 20 jul. 2024.