KLEIN, David R.; VLASOVA, Tatyana J. Lichens, a unique forage resource threatened by air pollution. Rangifer, Tromsø, Norway, v. 12, n. 1, p. 21–27, 1992. DOI: 10.7557/2.12.1.1021. Disponível em: https://septentrio.uit.no/index.php/rangifer/article/view/1021. Acesso em: 4 may. 2026.