https://www.bloomberg.com/news/articles/2017-08-25/brexit-bulletin-when-silence-isn-t-golden
http://blogactiv.eu/blog/2012/05/15/stumbling-towards-the-brexit/
http://www.migrationobservatory.ox.ac.uk/resources/reports/unsettled-status-which-eu-citizens-are-at-risk-of-failing-to-secure-their-rights-after-brexit/
https://www.gov.uk/government/news/joint-article-a-deep-and-special-partnership