TROLL, C. Sölle and Mardelles: Glacial and periglacial phenomena in continental Europe. ERDKUNDE, [S. l.], v. 16, n. 1, p. 31–34, 1962. DOI: 10.3112/erdkunde.1962.01.03. Disponível em: https://www.erdkunde.uni-bonn.de/article/view/1366. Acesso em: 30 apr. 2025.