http://www.icaew.com/-/media/corporate/files/technical/economy/brexit/eu-exit-charge.ashx
https://www.esri.ie/system/files/publications/WP677_0.pdf
https://publications.parliament.uk/pa/cm201719/cmselect/cmcumeds/365/365.pdf
https://ec.europa.eu/commission/sites/beta-political/files/position-paper-public-procurement_en.pdf