Project Lena for the construction site of the future; [Lena für die Baustelle der Zukunft]. gis.Business | issn : 1869-9286 [Internet]. 2017 Jul. 1 [cited 2026 Nov. 9];18(1):29-31. Available from: https://journal-gis.business/index.php/gisb/article/view/380