Holz-Rau C, Heyer R, Schultewolter M, Aertker J, Wachter I, Klinger T. A transport typology of major German cities. RuR [Internet]. 2021 Nov. 16 [cited 2026 Sep. 20];80(2). Available from: https://rur.oekom.de/index.php/rur/article/view/95