Hastenrath, Stefan, Raouf S. Rostom, and Wallis F. Hime. “Variations of the Lewis and Gregory Glaciers, Mount Kenya, 1990-1993”. ERDKUNDE 49, no. 1 (March 31, 1995): 60–62. Accessed October 7, 2024. https://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/2313.