“Esri Conference 2021 - A review; [Esri-Konferenz 2021-ein Rückblick]” (2021) gis.Business | issn : 1869-9286, 22(1), p. 47. Available at: https://journal-gis.business/index.php/gisb/article/view/642 (Accessed: 8 November 2026).