https://www.esri.ie/system/files/publications/SUSTAT117.pdf
http://www.europarl.europa.eu/cmsdata/115748/IPOL_IDA(2017)583130_EN.pdf
https://blogs.sussex.ac.uk/uktpo/2018/12/17/organising-the-second-referendum/
https://uk.finance.yahoo.com/news/brexit-risk-destroying-uks-entrepreneurial-start-ups-warwick-business-school-151240554.html