Johannes Breitenbach et.al.: A Systematic Literature Review of Current IoT-Based Approaches for Improving Sustainable Public Transportation in Smart Cities. In: 46th IEEE Annual Computers, Software, and Applications Conference, 2022, pp. 1690-1695. (COMPSAC, Los Alamitos, 27 Juni - 1 Juli). DOI: https://doi.org/10.1109/COMPSAC54236.2022.00269