FOX, A. D.; EBBINGE, B. S.; MITCHELL, C.; HEINICKE, T.; AARVAK, T.; COLHOUN, K.; CLAUSEN, P.; DERELIEV, S.; FARAGÓ, S.; KOFFIJBERG, K.; KRUCKENBERG, H.; LOONEN, M. J. J. E.; MADSEN, J.; MOOIJ, J.; MUSIL, P.; NILSSON, L.; PIHL, S.; VAN DER JEUGD, H. Current estimates of goose population sizes in western Europe, a gap analysis and an assessment of trends. Ornis Svecica, Lund, Sweden, v. 20, n. 3–4, p. 115–127, 2010. DOI: 10.34080/os.v20.19922. Disponível em: https://journals.lub.lu.se/os/article/view/19922. Acesso em: 6 dec. 2022.