https://www.socialeurope.eu/progressive-taxation-for-a-renewed-social-contract
https://www.socialeurope.eu/how-to-reform-the-european-fiscal-rules
https://www.bruegel.org/wp-content/uploads/2021/09/PC-2021-18-0909.pdf
https://knowledge.wharton.upenn.edu/article/how-the-u-s-could-stabilize-debt-and-fuel-economic-growth/