https://publications.parliament.uk/pa/cm201719/cmselect/cmexeu/935/935.pdf
https://publications.parliament.uk/pa/cm201719/cmselect/cmexeu/1778/1778.pdf
http://Bridging to Brexit: Insights from European SMEs, Corporates and Investors
http://ukandeu.ac.uk/wp-content/uploads/2018/10/The-mechanics-of-a-further-referendum-on-Brexit-Constitution-Unit-Report-1.pdf