ROWELL, Janice E.; WHITE, Robert G.; HAUER, William E. Progesterone during the breeding season and pregnancy in female muskoxen on different dietary regimens. Rangifer, Tromsø, Norway, v. 17, n. 3, p. 125–129, 1997. DOI: 10.7557/2.17.3.1363. Disponível em: https://septentrio.uit.no/index.php/rangifer/article/view/1363. Acesso em: 9 may. 2026.