https://www.socialeurope.eu/brexit-status-quo-ex-ante
http://Bridging to Brexit: Insights from European SMEs, Corporates and Investors
https://www.global-counsel.co.uk/sites/default/files/special-reports/downloads/Global%20Counsel_Impact_of_Brexit.pdf
https://ec.europa.eu/info/sites/info/files/com-2018-890-final.pdf