https://www.gov.uk/government/news/david-davis-opening-remarks-at-the-start-of-the-third-round-of-eu-exit-negotiations
https://institute.global/sites/default/files/articles/Moving-On-How-the-British-Public-Views-Brexit-and-What-It-Wants-From-the-Future-Relationship-With-the-European-Union.pdf
https://www.socialeurope.eu/romania-and-bulgaria-stuck-in-eus-second-tier