HARRIS, S. A. Distribution of zonal permafrost landforms with freezing and thawing indices. ERDKUNDE, [S. l.], v. 35, n. 2, p. 81–90, 1981. DOI: 10.3112/erdkunde.1981.02.01. Disponível em: https://www.erdkunde.uni-bonn.de/article/view/1936. Acesso em: 30 apr. 2025.