https://www.socialeurope.eu/checking-the-populist-tide-for-now
https://www.opendemocracy.net/en/oureconomy/democracy-and-charisma-dangerous-liaison/?utm_source=Daily+Newsletter&utm_campaign=f425507823-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-f425507823-407405485
https://trybunal.gov.pl/en/hearings/judgments/art/11662-ocena-zgodnosci-z-konstytucja-rp-wybranych-przepisow-traktatu-o-unii-europejskiej
http://wir2018.wid.world/files/download/wir2018-summary-english.pdf