Byizigiro, R. Vaillant, Thomas Raab, and Thomas Maurer. “Small-Scale Opencast Mining: An Important Research Field for Anthropogenic Geomorphology”. DIE ERDE – Journal of the Geographical Society of Berlin 146, no. 4 (December 17, 2015): 213–231. Accessed November 21, 2024. https://die-erde.org/index.php/die-erde/article/view/228.