
http://www.finfacts.ie/Irish_finance_news/articleDetail.php?Brexit-Northern-Ireland-s-industry-eclipsed-by-Republic-s-after-1961-803

http://openeurope.org.uk/today/blog/will-brexit-ground-flights-europe/

https://publications.parliament.uk/pa/ld201719/ldselect/ldeucom/63/63.pdf