https://www.economiesuisse.ch/de/artikel/kluge-steuerpolitik-bringt-wohlstand
https://static1.squarespace.com/static/5e449c8c3ef68d752f3e70dc/t/66100b4b26dd73546eb9c013/1712327500716/Rebalancing+Europe+Report+0424+v7.pdf
https://www.resolutionfoundation.org/app/uploads/2020/01/Dead-end-relationship.pdf
https://www.ombudsman.europa.eu/pdf/en/156017