
http://www.migrationobservatory.ox.ac.uk/resources/reports/unsettled-status-which-eu-citizens-are-at-risk-of-failing-to-secure-their-rights-after-brexit/

https://oversight.house.gov/sites/democrats.oversight.house.gov/files/2021-10-08.CBM%20GEC%20to%20Carnahan-GSA%20re%20Old%20Post%20Office%20Building%20Lease.pdf

https://www.ifri.org/sites/default/files/atoms/files/ifri_inozemstev_exode_juillet_2023.pdf