“Geo-apps, Open Data and remote sensing for efficient fieldwork; [Geo-Apps, Open Data und Fernerkundung für effiziente Geländearbeit]”, gis.Business | issn : 1869-9286, vol. 27, no. 1, pp. 18–21, Jan. 2026, Accessed: Nov. 08, 2026. Available: https://journal-gis.business/index.php/gisb/article/view/491