Innovative navigation and GEO-Apps: Which way to the. ; [Wo geht’s denn hier zur …]. gis.Business | issn : 1869-9286 [Internet]. 2015 Jan. 1 [cited 2026 Nov. 9];16(1):31-4. Available from: https://journal-gis.business/index.php/gisb/article/view/507