“Intergeo: From insight to outlook in the geo-world; [Intergeo: vom Ein- zum Ausblick in der Geo-Welt]”, gis.Business | issn : 1869-9286, vol. 16, no. 1, pp. 52–59, Jan. 2015, Accessed: Nov. 08, 2026. Available: https://journal-gis.business/index.php/gisb/article/view/513