RUSSELL ET AL., Don E. Chapter 3 - Late spring. Rangifer, Tromsø, Norway, v. 13, n. 5, p. 73–111, 1993. DOI: 10.7557/2.13.5.1062. Disponível em: https://septentrio.uit.no/index.php/rangifer/article/view/1062. Acesso em: 18 may. 2026.