https://library.fes.de/pdf-files/bueros/wien/19536-20220926.pdf
https://www.opendemocracy.net/uk/looking-at-lexit/guy-aitchison/borders-open-borders-or-no-borders?utm_source=Daily+Newsletter&utm_campaign=0a51e05bcc-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-0a51e05bcc-407405485
https://library.oapen.org/bitstream/id/c7b615eb-794a-46fa-b63d-63a9bae6b26e/9781951399030.pdf
https://ec.europa.eu/info/sites/default/files/communication_2021_rule_of_law_report_en.pdf