https://www.dsgv.de/newsroom/presse/190912_PM_EZB_30.html
https://www.socialeurope.eu/2017/07/european-safe-bond-handle-care/
https://theconversation.com/six-graphs-showing-the-state-of-the-uk-economy-a-year-after-brexit-referendum-79598
https://static1.squarespace.com/static/5ef4d1da53822a571493ebd0/t/5ffcfaea93e2771243fce2ff/1610414842497/A-Wealth-Tax-For-The-UK.pdf