https://www.socialeurope.eu/2017/07/road-soft-brexit/
https://www.gov.uk/government/news/david-davis-speech-at-ubs
https://www.esri.ie/system/files/publications/QEC2019SPR_SA_Bergin.pdf
https://www.opendemocracy.net/en/opendemocracyuk/customs-union-leaves-everything-play-trade-justice/?utm_source=Daily+Newsletter&utm_campaign=f531c721c4-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-f531c721c4-407405485