“Project Lena for the construction site of the future; [Lena für die Baustelle der Zukunft]” (2017) gis.Business | issn : 1869-9286, 18(1), pp. 29–31. Available at: https://journal-gis.business/index.php/gisb/article/view/380 (Accessed: 9 November 2026).