https://www.socialeurope.eu/2017/07/road-soft-brexit/
https://economy2030.resolutionfoundation.org/wp-content/uploads/2023/12/Ending-stagnation-final-report.pdf
http://docs.dpaq.de/10395-0216-euco-conclusions.pdf
https://publications.parliament.uk/pa/cm201719/cmselect/cmcumeds/365/365.pdf