NILSSON, L.; KAMPE-PERSSON, H. Changes in migration and wintering patterns of Greylag Geese Anser anser from southernmost Sweden during three decades. Ornis Svecica, Lund, Sweden, v. 28, n. 1, p. 19–38, 2018. DOI: 10.34080/os.v28.19521. Disponível em: https://journals.lub.lu.se/os/article/view/19521. Acesso em: 17 oct. 2021.