
https://blogs.lse.ac.uk/europpblog/2022/08/17/threats-and-solidarity-in-the-eurozone-how-italian-and-german-citizens-respond-to-information-about-italexit/

http://norden.diva-portal.org/smash/get/diva2:1095959/FULLTEXT02.pdf

https://www.socialeurope.eu/progressive-taxation-for-a-renewed-social-contract