Fritsch, Michael, and Matthias Piontek. “Universities and Demographic Change—Trends and Options”. Raumforschung und Raumordnung | Spatial Research and Planning 73, no. 5 (October 31, 2015): 357–368. Accessed August 24, 2026. https://rur.oekom.de/index.php/rur/article/view/654.