https://publications.parliament.uk/pa/cm201719/cmselect/cmfaff/780/780.pdf
http://HTTPS://WWW.OPENDEMOCRACY.NET/NEWECONOMICS/BREXIT-ECONOMIC-CATASTROPHE-MUST-STOPPED/
https://ec.europa.eu/commission/sites/beta-political/files/guiding-principles-dialogue-ei-ni_en.pdf