W. Zhang, S. Wang, and N. Haala. XXIV ISPRS Congress “Imaging today, foreseeing tomorrow”, Commission I, V-1-2022, page 211-219. Copernicus Publications, (2022)
G. Kerekes, and V. Schwieger. LBS 2021 : Proceedings of the 16th International Conference on Location Based Services, page 204-209. Vienna, TU Wien, (2021)