https://www.lamoncloa.gob.es/consejodeministros/resumenes/Documents/2022/PAN%20202.pdf
http://www.diw.de/documents/publikationen/73/diw_01.c.562050.de/17-29.pdf
https://www.opendemocracy.net/can-europe-make-it/andreas-rahmatian/eu-as-britain-s-constitutional-stabiliser?utm_source=Daily+Newsletter&utm_campaign=8d26251e8d-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-8d26251e8d-407405485
https://www.project-syndicate.org/commentary/poland-hungary-elections-2019-by-slawomir-sierakowski-2019-10