http://www.coggs.polis.cam.ac.uk/news/forum-on-geopolitics-triple-bill-on-brexit
https://ec.europa.eu/commission/sites/beta-political/files/joint_report.pdf
https://publications.parliament.uk/pa/ld201719/ldselect/ldeucom/129/129.pdf
https://publications.parliament.uk/pa/cm201719/cmselect/cmbeis/379/379.pdf