https://www.publications.parliament.uk/pa/ld201617/ldselect/ldeucom/116/116.pdf
http://data.parliament.uk/writtenevidence/committeeevidence.svc/evidencedocument/treasury-committee/the-uks-economic-relationship-with-the-european-union/oral/72053.html
https://ormosi.wordpress.com/2017/06/06/brexit-uncertainty-fewer-mergers-big-business-winners/#more-566
http://www.cesifo-group.de/portal/page/portal/DocBase_Service/studien/Studie-2017-Felbermayr-etal-Brexit-79843.pdf