https://publications.parliament.uk/pa/cm201719/cmselect/cmworpen/848/848.pdf
http://www.ips-journal.eu/regions/global/article/show/brexit-but-what-about-africa-2199/
https://blogs.lse.ac.uk/brexit/2019/12/03/a-missed-opportunity-revisiting-the-euro-referendum-that-never-was-from-a-historical-perspective/
http://europa.eu/rapid/press-release_MEMO-17-2001_en.htm