https://www.socialeurope.eu/economic-sovereignty-delusion
https://constitution-unit.com/2022/09/06/boris-johnson-and-the-myth-of-getting-brexit-done/?mc_cid=95e6373cc2&mc_eid=815b1928ec
https://www.publications.parliament.uk/pa/cm201617/cmselect/cmbeis/909/909.pdf
http://www.cesifo-group.de/portal/page/portal/DocBase_Service/studien/Studie-2017-Felbermayr-etal-Brexit-79843.pdf