
https://ukandeu.ac.uk/trade-migration-and-brexit/

http://www.cesifo-group.de/portal/page/portal/DocBase_Service/studien/Studie-2017-Felbermayr-etal-Brexit-79843.pdf

https://publications.parliament.uk/pa/cm200203/cmhansrd/vo021126/debtext/21126-17.htm