https://www.euronews.com/2018/09/25/why-is-the-irish-border-issue-so-complex-euronews-answers
https://institute.global/news/the-inbetweener-brexit
http://www.ey.com/Publication/vwLUAssets/EY-UK-EU-Working-through-uncertainty/%24FILE/EY-UK-EU-Working-through-uncertainty-considerations-for-Financial-Institutions.pdf
https://www.ifs.org.uk/publications/10302