VOSLAMBER, Berend; KNECHT, Elise; KLEIJN, David. Grågåsen Anser anser i Holland: flytt- eller stannfågel?. Ornis Svecica, Lund, Sweden, v. 20, n. 3–4, p. 207–214, 2010. DOI: 10.34080/os.v20.22626. Disponível em: https://journals.lub.lu.se/os/article/view/22626. Acesso em: 18 juli. 2024.