https://www.socialeurope.eu/european-election-defence-and-a-european-constitution
https://www.documentcloud.org/documents/5955249-Report.html
https://www.brookings.edu/blog/future-development/2019/11/08/how-german-reunification-could-change-global-capitalism-today/?utm_campaign=Brookings%20Brief&utm_source=hs_email&utm_medium=email&utm_content=79171968
https://www.ipg-journal.de/regionen/global/artikel/detail/back-to-the-roots-4359/