https://publications.parliament.uk/pa/bills/cbill/2017-2019/0005/18005.pdf
https://publications.parliament.uk/pa/ld5801/ldselect/ldeucom/4/4.pdf
http://www.finfacts.ie/Irish_finance_news/articleDetail.php?Brexit-Northern-Ireland-s-industry-eclipsed-by-Republic-s-after-1961-803
https://committees.parliament.uk/publications/30492/documents/175947/default/