“Tablets and Notebooks for Harsh Conditions; [Tablets Und Notebooks Für Raue Bedingungen]”. gis.Business | issn : 1869-9286 16, no. 1 (January 1, 2015): 25–26. Accessed November 8, 2026. https://journal-gis.business/index.php/gisb/article/view/504.