http://bruegel.org/wp-content/uploads/2017/03/WP_2017_03-.pdf
https://blogs.lse.ac.uk/brexit/2019/10/15/the-curve-of-inequality-and-the-brexit-way/
https://www.gov.uk/government/news/joint-article-a-deep-and-special-partnership
http://blogs.lse.ac.uk/brexit/2017/09/28/the-eu-referendum-was-gerrymandered/