https://ukandeu.ac.uk/wp-content/uploads/2021/11/Brexit-and-Services-Trade-Working-Paper.pdf
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
https://unctad.org/system/files/official-document/wir2021_overview_en.pdf
https://www.politico.eu/article/the-uk-failed-10-year-bid-to-fix-the-brexit-border-northern-ireland/