http://blogs.lse.ac.uk/brexit/2017/09/28/the-eu-referendum-was-gerrymandered/
http://blogs.lse.ac.uk/brexit/2018/05/25/what-are-the-legal-aspects-of-packing-the-lords-with-brexit-friendly-peers/
http://docs.dpaq.de/10395-0216-euco-conclusions.pdf
https://www.iod.com/Portals/0/PDFs/Campaigns%20and%20Reports/Europe%20and%20trade/Business-of-Brexit.pdf?ver=2017-05-22-090428-150