https://publications.parliament.uk/pa/bills/cbill/2017-2019/0005/18005.pdf
https://www.theguardian.com/politics/ng-interactive/2019/sep/02/a-typical-hour-in-the-life-of-the-irish-border?ncid=newsletter-ukThe%20Waugh%20Zone%20%20Mon%20Sept%202&utm_campaign=newsletter-The%20Waugh%20Zone%20%20Mon%20Sept%202
https://www.hks.harvard.edu/sites/default/files/centers/mrcbg/programs/senior.fellows/Brexit%20Paper%20IV%20-%20Final%20Paper.pdf
http://HTTPS://WWW.OPENDEMOCRACY.NET/NEWECONOMICS/BREXIT-ECONOMIC-CATASTROPHE-MUST-STOPPED/