http://www.europarl.europa.eu/RegData/etudes/STUD/2017/602028/IPOL_STU(2017)602028_EN.pdf
https://ukandeu.ac.uk/energy-security-and-industrial-strategy-uk-and-eu-divergence/
https://ec.europa.eu/commission/sites/beta-political/files/outline_of_the_political_declaration.pdf
http://ukandeu.ac.uk/brexit-a-french-perspective/