https://think.ing.com/articles/four-scenarios-for-eurozone-reform-at-this-weeks-eu-summit/
https://www.socialeurope.eu/corporate-taxation-financing-state-and-welfare
https://www.bruegel.org/sites/default/files/2022-11/PC%2020%202022_4.pdf
https://www.cesifo-group.de/DocDL/EEAG-2018.pdf