Hastenrath, Stefan, Raouf Rostom, and Robert A. Caukwell. “Variations of Mount Kenya´s Glaciers 1963-1987”. ERDKUNDE 43, no. 3 (September 30, 1989): 202–210. Accessed December 11, 2024. https://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/2185.