AASTRUP, P.; MOSBECH, A. Transect width and missed observations in counting muskoxen (Ovibos moschatus) from fixed-wing aircraft. Rangifer, Tromsø, Norway, v. 13, n. 2, p. 99–104, 1993. DOI: 10.7557/2.13.2.1096. Disponível em: https://septentrio.uit.no/index.php/rangifer/article/view/1096. Acesso em: 28 apr. 2026.