https://publications.parliament.uk/pa/ld201719/ldselect/ldeucom/63/63.pdf
https://www.rand.org/pubs/research_reports/RR2200.html
http://www.britishchambers.org.uk/press-office/press-releases/bcc-no-deal-not-an-option-for-business-communities.html
http://www.ips-journal.eu/regions/global/article/show/brexit-but-what-about-africa-2199/