http://www.assemblee-nationale.fr/14/pdf/rap-info/i4485.pdf
http://www.resolutionfoundation.org/app/uploads/2017/10/Changing-Lanes-3.pdf
https://theconversation.com/mary-beard-is-right-roman-britain-was-multi-ethnic-so-why-does-this-upset-people-so-much-82269
https://institute.global/sites/default/files/articles/Moving-On-How-the-British-Public-Views-Brexit-and-What-It-Wants-From-the-Future-Relationship-With-the-European-Union.pdf