Zimmermann, Karsten, Christian Hundt, Christian Jütte, and Carolin Pofalla. “Dortmund, Duisburg and the 2008 2009 Recession – Why Two Cities of One Region Show Different Patterns of Economic Resilience”. Raumforschung und Raumordnung | Spatial Research and Planning 75, no. 5 (October 31, 2017): 439–453. Accessed April 27, 2024. https://rur.oekom.de/index.php/rur/article/view/429.