https://theconversation.com/eu-citizens-proposal-a-lawyer-examines-the-detail-80111
https://onlinelibrary.wiley.com/doi/epdf/10.1111/jcms.13386
https://publications.parliament.uk/pa/bills/cbill/58-03/0204/220204.pdf
https://www.tandfonline.com/doi/epdf/10.1080/01402382.2023.2168945?needAccess=true&role=button