https://www.socialeurope.eu/trump-and-brexit
https://ec.europa.eu/commission/publications/position-paper-transmitted-eu27-issues-relating-functioning-union-institutions-agencies-and-bodies_en
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/728135/THE_FUTURE_UK-EU_RELATIONSHIP.pdf
https://publications.parliament.uk/pa/cm201719/cmselect/cmbeis/379/379.pdf