COLLINS, W. B.; SMITH, T. S. Twenty-four hour behaviour patterns and budgets of free-ranging reindeer in winter. Rangifer, [S. l.], v. 9, n. 1, p. 2–8, 1989. DOI: 10.7557/2.9.1.766. Disponível em: https://septentrio.uit.no/index.php/rangifer/article/view/766. Acesso em: 18 may. 2024.