https://yougov.co.uk/news/2017/08/01/britain-nation-brexit-extremists/
https://institute.global/news/customs-and-exiting-european-union
https://share.trin.cam.ac.uk/sites/public/Comms/Rogers_brexit_as_revolution.pdf
http://www.reuters.com/article/us-britain-eu-verhofstadt-idUSKBN19V0WP