Schüttemeyer A, Föbker S, Ramatschi G, Grotz R. Elderly people on the road: an approach to a more sustainable leisure mobility. ERDKUNDE [Internet]. 2004 Mar. 31 [cited 2025 Apr. 30];58(1):17-30. Available from: https://www.erdkunde.uni-bonn.de/article/view/2516