https://theconversation.com/how-european-academics-are-feeling-about-life-in-britain-a-year-after-brexit-vote-78687
http://www2.warwick.ac.uk/fac/soc/pais/research/researchcentres/irs/crossingthemed/ctm_final_report_4may2017.pdf
http://www.assemblee-nationale.fr/14/pdf/rap-info/i4551.pdf