HAYES, Robert D.; RUSSELL, Donald E. Predation rate by wolves on the Porcupine caribou herd. Rangifer, Tromsø, Norway, v. 20, n. 5, p. 51–58, 2000. DOI: 10.7557/2.20.5.1624. Disponível em: https://septentrio.uit.no/index.php/rangifer/article/view/1624. Acesso em: 26 may. 2026.