https://www.unhcr.org/gcr/GCR_English.pdf
https://www.unhcr.org/5ee200e37.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://www.ips-journal.eu/topics/democracy-and-society/between-human-rights-and-border-control-6860/