https://www.brexitloket.nl/impactscan
http://docs.dpaq.de/10395-0216-euco-conclusions.pdf
http://blogs.lse.ac.uk/politicsandpolicy/john-mills-ge2017/
http://www.europarl.europa.eu/cmsdata/115748/IPOL_IDA(2017)583130_EN.pdf