1. University of Cologne Faculty of Management Economics and Social Sciences Department of Economic and Social Geography Albertus-Magnus-Platz 50923 http://www.wigeo.uni-koeln.de/ Cologne Germany
2. University of Cologne Faculty of Mathematics and Natural Sciences Institute of Geography Albertus-Magnus-Platz 50923 https://geographie.uni-koeln.de/forschung/arbeitsgruppen/anthropogeographie-stadt-und-regionalentwicklung/team/dannenberg-peter Cologne Germany
3. WZB Berlin Social Science Center WZB Berlin Social Science Center Reichpietschufer 50 10785 https://www.wzb.eu/en/persons/tatiana-lopez-ayala Berlin Germany
4. University of Cologne Faculty of Mathematics and Natural Sciences Institute of Geography Albertus-Magnus-Platz 50923 https://geographie.uni-koeln.de/forschung/arbeitsgruppen/anthropogeographie-stadt-und-regionalentwicklung/team/wiedemann-cathrin-1 Cologne Germany