https://www.socialeurope.eu/trump-and-brexit
https://publications.parliament.uk/pa/bills/cbill/2017-2019/0005/18005.pdf
https://www.niauk.org/media-centre/blog/uk-explore-retaining-membership-euratom/
http://www.epc.eu/documents/uploads/pub_7576_northernirelandandbrexit.pdf