http://bruegel.org/wp-content/uploads/2017/03/WP_2017_03-.pdf
https://publications.parliament.uk/pa/cm201719/cmselect/cmcumeds/365/365.pdf
https://www.opendemocracy.net/can-europe-make-it/john-weeks/trade-access-unemployment-and-other-single-market-mythologies?utm_source=Daily+Newsletter&utm_campaign=b26233dc76-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-b26233dc76-407405485
https://www.opendemocracy.net/uk/robin-wilson/brexit-view-from-other-end-of-telescope?utm_source=Daily+Newsletter&utm_campaign=51652e55f2-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-51652e55f2-407405485