NILSSON, L.; PERSSON, H. Feeding areas and local movement patterns of post-breeding Greylag Geese Anser anser in South Sweden. Ornis Svecica, Lund, Sweden, v. 2, n. 2, p. 77–90, 1992. DOI: 10.34080/os.v2.23060. Disponível em: https://journals.lub.lu.se/os/article/view/23060. Acesso em: 7 jul. 2022.