Aring, Jürgen, Gerd Albers, and Robert Kaltenbrunner. “Rezensionen”. Raumforschung und Raumordnung | Spatial Research and Planning 62, no. 2 (March 31, 2004): 157–161. Accessed March 16, 2025. https://rur.oekom.de/index.php/rur/article/view/1534.