“Intergeo 2021 Hybrid in Hanover - Geocommunity Meets Live and Digitally; [Intergeo 2021 Hybrid in Hannover - Die Geocommunity Trifft Sich Live Und Digital]”. 2021. Gis.Business | Issn : 1869-9286 22 (1): 56-57. https://journal-gis.business/index.php/gisb/article/view/646.