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

https://www.gov.uk/guidance/status-of-eu-nationals-in-the-uk-what-you-need-to-know

https://business-humanrights.org/sites/default/files/documents/fra-2017-opinion-01-2017-business-human-rights_en.pdf