Diller, C. and Thaler, T. (2017) β€œTo the Gap Between Theory-based Planning Research and Planning Practice. An Examination of Large Parts of the German-language Output in Planning Science Since 2003”, Raumforschung und Raumordnung | Spatial Research and Planning, 75(1), pp. 57–69. doi:10.1007/s13147-016-0431-6.