SCHAEFER, James A.; MESSIER, Francois. The implications of environmental variability on caribou demography: theoretical considerations. Rangifer, Tromsø, Norway, v. 11, n. 4, p. 53–59, 1991. DOI: 10.7557/2.11.4.994. Disponível em: https://septentrio.uit.no/index.php/rangifer/article/view/994. Acesso em: 4 jun. 2026.