https://www.cesifo-group.de/DocDL/ifoDD_18-01_03-09_Ochsner.pdf
https://ec.europa.eu/commission/sites/beta-political/files/outline_of_the_political_declaration.pdf
https://www.opendemocracy.net/uk/anthony-barnett/englishman-scotswoman-and-irishman-talk-about-brexit?utm_source=Daily+Newsletter&utm_campaign=d6dd65c541-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-d6dd65c541-407405485
http://fedtrust.co.uk/our-work-on-europe/there-may-be-trouble-ahead-brexit-after-the-election/