SKJENNEBERG (ED.), Sven. Kjell J. Nilssen; Factors affecting energy expenditure in reindeer. Rangifer, Tromsø, Norway, v. 4, n. 2, p. 49, 1984. DOI: 10.7557/2.4.2.493. Disponível em: https://septentrio.uit.no/index.php/rangifer/article/view/493. Acesso em: 9 may. 2026.