Schiller, Georg, Andreas Blum, and Holger Oertel. “The Relevance of Smaller Municipalities and Small-Scale Potential for Infill Development. A Quantitative Monitoring Using the Example of Germany”. Raumforschung und Raumordnung | Spatial Research and Planning 76, no. 5 (October 31, 2018): 461–471. Accessed August 15, 2026. https://rur.oekom.de/index.php/rur/article/view/369.