
https://www.bertelsmann-stiftung.de/en/publications/publication/did/social-justice-in-the-eu-index-report-2016/

https://trybunal.gov.pl/en/hearings/judgments/art/11662-ocena-zgodnosci-z-konstytucja-rp-wybranych-przepisow-traktatu-o-unii-europejskiej

https://www.fraserinstitute.org/sites/default/files/populism-majority-rule-and-economic-freedom-ch3.pdf