https://www.socialeurope.eu/2017/07/time-eu-fair-movement-directive/
https://www.llri.lt/wp-content/uploads/2018/06/Labour-Migration_3.pdf
http://ec.europa.eu/social/main.jsp?catId=1143&intPageId=3193&langId=en/
https://www.pwc.co.uk/economic-services/assets/international-impact-of-automation-feb-2018.pdf