1. Aber, J. (2006).Economic regeneration strategies for shrinking cities in the context of the new economy—architecture, culture-led regeneration and the creative community. International symposium “Coping with city shrinkage and demographic change—lessons from around the globe”, Dresden.
2. University spin-offs, entrepreneurial environment and start-up policy: the cases of Waterloo and Toronto (Ontario) and Columbus (Ohio)
3. Beisswenger, S. & Weck, S. (2011).Fallstudie Pirmasens. Project “Stadtkarrieren in peripherisierten Räumen”. Retrieved September 10, 2014, from http://www.ils-forschung.de/cms25/down/Pirmasens-Bericht_Endfassung_012011.pdf
4. Understanding Shrinkage in European Regions