http://fedtrust.co.uk/our-work-on-europe/there-may-be-trouble-ahead-brexit-after-the-election/
http://www.telegraph.co.uk/news/0/tory-dup-deal-agreement-full/
https://bdi.eu/media/user_upload/20171005_Pressemitteilung_Brexit.pdf
http://www.belfasttelegraph.co.uk/news/general-election-2017/comment/brexit-is-neither-a-partitionmaker-nor-a-partitionbreaker-that-decision-will-rest-with-northern-ireland-voters-35684229.html