https://www.euronews.com/2018/09/25/why-is-the-irish-border-issue-so-complex-euronews-answers
https://www.bloomberg.com/news/articles/2017-06-01/soros-says-brexit-may-last-5-years-and-cause-immense-damage?cmpid=BBBXT060217_BIZ&utm_medium=email&utm_source=newsletter&utm_term=170602&utm_campaign=brexit
https://committees.parliament.uk/oralevidence/2766/pdf/
http://www.iata.org/whatwedo/Documents/economics/impact_of_brexit.pdf