https://bdi.eu/media/user_upload/20171005_Pressemitteilung_Brexit.pdf
http://www.lawyersforbritain.org/eu-deal-financial-liabilities.shtml
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://HTTPS://WWW.OPENDEMOCRACY.NET/NEWECONOMICS/BREXIT-ECONOMIC-CATASTROPHE-MUST-STOPPED/