ÅHMAN, Birgitta. Transfer of radiocaesium from lichen to reindeer. Rangifer, Tromsø, Norway, v. 10, n. 4, p. 67–68, 1990. DOI: 10.7557/2.10.4.929. Disponível em: https://septentrio.uit.no/index.php/rangifer/article/view/929. Acesso em: 8 dec. 2025.