http://carnegieeurope.eu/2017/06/15/bringing-brexit-back-to-reality-pub-71262
https://www.smmt.co.uk/wp-content/uploads/sites/2/1207-SMMT-position-on-UK-Brexit-negotiations.pdf
http://www.europarl.europa.eu/cmsdata/115748/IPOL_IDA(2017)583130_EN.pdf
http://www.europarl.europa.eu/RegData/etudes/IDAN/2017/599352/EPRS_IDA%282017%29599352_EN.pdf