http://www.epc.eu/documents/uploads/pub_7576_northernirelandandbrexit.pdf
http://www.britishelectionstudy.com/bes-findings/what-mattered-most-to-you-when-deciding-how-to-vote-in-the-eu-referendum/#.WWPVLnmQw2z
https://ec.europa.eu/commission/publications/agenda-19-june-meeting-between-eu-and-uk-article-50-negotiations_en
https://www.opendemocracy.net/anthony-barnett/why-brexit-won-t-work-eu-is-about-regulation-not-sovereignty?utm_source=Daily+Newsletter&utm_campaign=84fcef5dd0-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-84fcef5dd0-407405485