1. Junior Professor, RWTH Aachen University, Faculty of Architecture, Wüllnerstr. 5B, 52062 Aachen, Germany
2. ILS Research Institute for Regional and Urban Development, Brüderweg 22–24, 44135 Dortmund, Germany
3. RWTH Aachen University, Faculty of Architecture, Wüllnerstr. 5B, 52062 Aachen, Germany