
http://www.resolutionfoundation.org/app/uploads/2017/10/Changing-Lanes-3.pdf

https://blogs.lse.ac.uk/brexit/2021/01/11/article-16-of-the-ireland-northern-ireland-protocol-offers-no-quick-fix/

https://ec.europa.eu/commission/publications/position-paper-essential-principles-citizens-rights_en