https://www.economiesuisse.ch/de/artikel/globale-umverteilung-der-firmensteuern-mit-fragezeichen
http://www.ips-journal.eu/topics/european-union/article/show/eu-assurance-co-2037/
https://www.bloomberg.com/news/articles/2020-04-03/the-virus-will-force-europe-to-make-a-decision-about-italy?cmpid=BBD040320_CORONAVIRUS&utm_medium=email&utm_source=newsletter&utm_term=200403&utm_campaign=coronavirus
https://library.fes.de/pdf-files/wiso/14700.pdf