https://www.ipg-journal.de/regionen/europa/artikel/detail/wind-in-ihren-segeln-4625/
https://read.oecd-ilibrary.org/social-issues-migration-health/international-migration-outlook-2018_migr_outlook-2018-en#page1
https://www.dw.com/en/european-union-bloc-backs-plan-for-stricter-asylum-reforms/a-65861983#:~:text=The%20European%20Union%27s%2027%20member%20states%20have%20agreed,those%20seeking%20asylum%20and%20solidarity%20in%20the%20EU.
http://www.britishchambers.org.uk/press-office/press-releases/bcc-firms-invest-in-local-labour-but-still-need-foreign-skills-to-plug-shortages.html