
https://www.ceps.eu/wp-content/uploads/2022/05/CEPS-PI2022-18-Moldova-EU-membership.pdf

http://blogs.lse.ac.uk/brexit/2018/11/23/hubert-butler-essay-prize-what-happened-to-europe-without-frontiers/

https://www.strategie.gouv.fr/sites/strategie.gouv.fr/files/atoms/files/fs-2022-rapport-soutenabilites-7mai-17h-final-synthese.pdf