Fürst, A. and Balke, J. 2013. Transnational Ethnic Entrepreneurship. The Case Study of Entrepreneurs of Turkish Origin in Duisburg-Marxloh 
. Raumforschung und Raumordnung | Spatial Research and Planning. 71, 3 (Jun. 2013), 247–259. DOI:https://doi.org/10.1007/s13147-013-0233-z.