https://cer.org.uk/sites/default/files/bulletin_114_js_st_article1.pdf
https://www.socialeurope.eu/2017/07/brexit-to-nowhere/
http://ukandeu.ac.uk/brexit-a-french-perspective/
https://blogs.lse.ac.uk/brexit/2021/01/11/article-16-of-the-ireland-northern-ireland-protocol-offers-no-quick-fix/