http://www.epc.eu/documents/uploads/pub_7576_northernirelandandbrexit.pdf
http://blogs.lse.ac.uk/brexit/2017/08/22/what-does-respecting-the-referendum-result-mean/
https://ukandeu.ac.uk/the-rise-and-rise-of-a-new-majority-in-northern-ireland/?mc_cid=7c246b3886&mc_eid=815b1928ec