NILSSON, Leif. The migrations of Finnish Bean Geese Anser fabalis in 1978–2011. Ornis Svecica, Lund, Sweden, v. 21, n. 2–4, p. 157–166, 2011. DOI: 10.34080/os.v21.22599. Disponível em: https://journals.lub.lu.se/os/article/view/22599. Acesso em: 23 apr. 2024.