GUSTAVSSON, C G. Images of Barnacle Goose Branta leucopsis hybrids – a photo documentation of some crosses with different Anser species. Ornis Svecica, Lund, Sweden, v. 19, n. 1, p. 19–31, 2009. DOI: 10.34080/os.v19.22662. Disponível em: https://journals.lub.lu.se/os/article/view/22662. Acesso em: 25 may. 2024.