https://www.gov.uk/government/news/pms-open-letter-to-eu-citizens-in-the-uk
https://www.esri.ie/system/files/publications/RB202017_2.pdf
https://www.niesr.ac.uk/wp-content/uploads/2023/11/JC760-NIESR-Outlook-Autumn-2023-Global-Topical-Feature-v2.pdf
https://theconversation.com/eu-citizens-proposal-a-lawyer-examines-the-detail-80111