https://allianceofdemocracies.org/democracy-perception-index
https://www.imf.org/-/media/Files/Publications/GFSR/2023/April/English/ch3.ashx
https://trybunal.gov.pl/en/hearings/judgments/art/11662-ocena-zgodnosci-z-konstytucja-rp-wybranych-przepisow-traktatu-o-unii-europejskiej
https://www.ifri.org/sites/default/files/atoms/files/ifri_holzhauser_alliance_bsw_2024.pdf