https://www.etui.org/content/download/36217/363575/file/F-B_07_EN_WEB.pdf
http://library.fes.de/pdf-files/iez/13375.pdf
https://wiiw.ac.at/employment-effects-of-offshoring-technological-change-and-migration-in-a-group-of-western-european-economies-impact-on-different-occupations-dlp-6500.pdf
https://blogs.lse.ac.uk/europpblog/2021/07/23/same-legal-status-but-unequal-treatment-bureaucratic-discrimination-against-mobile-eu-citizens/