http://europa.eu/rapid/press-release_IP-18-463_en.htm
http://www.cesifo-group.de/portal/page/portal/DocBase_Service/studien/Studie-2017-Felbermayr-etal-Brexit-79843.pdf
https://www.esri.ie/system/files/publications/WP677_0.pdf
https://www.nao.org.uk/wp-content/uploads/2022/05/Regulating-after-EU-Exit.pdf