NIEMINEN, Mauri; HEISKARI, Ulla. Diets of freely grazing and captive reindeer during summer and winter. Rangifer, Tromsø, Norway, v. 9, n. 1, p. 17–34, 1989. DOI: 10.7557/2.9.1.771. Disponível em: https://septentrio.uit.no/index.php/rangifer/article/view/771. Acesso em: 18 apr. 2026.