http://carnegieeurope.eu/2017/06/15/bringing-brexit-back-to-reality-pub-71262
https://socialeurope.eu/brexit-why-does-northern-ireland-matter-so-much
http://www.bakermckenzie.com/-/media/files/insight/publications/brexit_tradeflows.pdf?la=en
https://www.esri.ie/system/files/publications/WP677_0.pdf