Höhnle, Steffen, Jan Christoph Schubert, and Rainer Uphues. “Learning With Geographic Information (Systems) from the Point of View of Geography Teachers in Germany”. Journal of Geography Education 40, no. 2 (June 30, 2012): 49–68. Accessed April 3, 2026. https://zgd-journal.de/index.php/zgd/article/view/142.