RUSSELL ET AL., Don E. Chapter 2 - Winter. Rangifer, Tromsø, Norway, v. 13, n. 5, p. 27–71, 1993. DOI: 10.7557/2.13.5.1061. Disponível em: https://septentrio.uit.no/index.php/rangifer/article/view/1061. Acesso em: 2 may. 2026.