https://www.socialeurope.eu/2017/06/theresa-mays-other-citizens-of-nowhere/
http://carnegieeurope.eu/strategiceurope/72634?lang=en
http://www.consilium.europa.eu/en/press/press-releases/2017/04/29-euco-brexit-guidelines/
https://read.oecd-ilibrary.org/social-issues-migration-health/international-migration-outlook-2018_migr_outlook-2018-en#page1