
https://wiiw.ac.at/the-factors-driving-migration-intentions-and-destination-preferences-in-central-east-and-southeast-european-countries-dlp-6901.pdf

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://s3.eu-central-1.amazonaws.com/euobs-media/59f9f4116a089cec71bf81b76413503a.pdf