“Virtual realities say more than a thousand words; [Virtuelle realitäten sagen mehr als 1000 worte]”, gis.Business | issn : 1869-9286, vol. 22, no. 1, pp. 10–12, Jan. 2021, Accessed: Nov. 09, 2026. Available: https://journal-gis.business/index.php/gisb/article/view/429