https://www.publications.parliament.uk/pa/ld201617/ldselect/ldeucom/116/116.pdf
http://Bridging to Brexit: Insights from European SMEs, Corporates and Investors
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/725288/The_future_relationship_between_the_United_Kingdom_and_the_European_Union.pdf
http://www.reuters.com/article/us-britain-eu-verhofstadt-idUSKBN19V0WP