https://rusi.org/sites/default/files/newsbrief_37.3_elliott.pdf
http://www.cesifo-group.de/portal/page/portal/DocBase_Service/studien/Studie-2017-Felbermayr-etal-Brexit-79843.pdf
https://labour.org.uk/wp-content/uploads/2022/12/Commission-on-the-UKs-Future.pdf