CAUKWELL, R. A.; HASTENRATH, S. Variations of Lewis Glacier, Mount Kenya, 1978-82. ERDKUNDE, [S. l.], v. 36, n. 4, p. 299–303, 1982. DOI: 10.3112/erdkunde.1982.04.07. Disponível em: https://www.erdkunde.uni-bonn.de/article/view/1993. Acesso em: 30 apr. 2025.