http://www.europarl.europa.eu/cmsdata/115748/IPOL_IDA(2017)583130_EN.pdf
http://www.fdf.org.uk/news.aspx?article=7834
https://bdi.eu/#/artikel/news/europa-muss-ein-worst-case-szenario-verhindern/
https://www.gov.uk/guidance/status-of-eu-nationals-in-the-uk-what-you-need-to-know