http://www.cer.eu/sites/default/files/pb_ireland_brexit_6.7.17.pdf
http://europa.eu/rapid/press-release_IP-18-463_en.htm
http://www.russellgroup.ac.uk/media/5521/rg-international-students-june-2017.pdf
https://publications.parliament.uk/pa/cm201719/cmselect/cmexeu/1778/1778.pdf