GREEN, Martin. Spring migration of Barnacle Goose Branta leucopsis and Dark-bellied Brent Goose B. bernicla bernicla over Sweden. Ornis Svecica, Lund, Sweden, v. 8, n. 3, p. 103–123, 1998. DOI: 10.34080/os.v8.22950. Disponível em: https://journals.lub.lu.se/os/article/view/22950. Acesso em: 19 apr. 2024.