1. School of Social Sciences and Humanities, Loughborough University , Epinal Way, Loughborough , UK
2. Department of Human Geography and Spatial Planning, Utrecht University , Princetonlaan 8a, 3584 CB Utrecht , the Netherlands
3. Dynamics of Economic Spaces, Leibniz Institute for Research on Society and Space , Flakenstraße 29-31, 15537 Erkner , Germany
4. Department of Geography, Humboldt University of Berlin , Unter den Linden 6, 10117 Berlin , Germany