
http://www.migrationobservatory.ox.ac.uk/resources/reports/unsettled-status-which-eu-citizens-are-at-risk-of-failing-to-secure-their-rights-after-brexit/

http://www.ips-journal.eu/topics/human-rights/article/show/lets-not-lose-our-thread-2155/

https://www.eurofound.europa.eu/sites/default/files/wpef17037.pdf