Schicketanz, Juliane, Linus Grabenhenrich, and Tobia Lakes. “An Index for Assessing Activity Friendliness for Children in Urban Environments of Berlin”. DIE ERDE – Journal of the Geographical Society of Berlin 149, no. 1 (March 30, 2018): 1–13. Accessed November 21, 2024. https://die-erde.org/index.php/die-erde/article/view/357.