http://www.epc.eu/documents/uploads/pub_7576_northernirelandandbrexit.pdf
http://institute.global/news/tony-blair-opening-remarks-epp-meeting-wicklow
http://www.ilo.org/wcmsp5/groups/public/—dgreports/—dcomm/—publ/documents/publication/wcms_490959.pdf
http://bruegel.org/wp-content/uploads/2017/03/WP_2017_03-.pdf
https://www.eda.admin.ch/dam/eda/en/documents/publications/EuropaeischeAngelegenheiten/Schweiz-und-EU_en.pdf
https://fullfact.org/europe/uk-law-what-proportion-influenced-eu/
http://www.ilo.org/wcmsp5/groups/public/—dgreports/—dcomm/—publ/documents/publication/wcms_537982.pdf
http://www.ilo.org/wcmsp5/groups/public/—dgreports/—dcomm/—publ/documents/publication/wcms_548950.pdf
https://www.publications.parliament.uk/pa/ld201314/ldselect/ldeucom/164/164.pdf
http://library.fes.de/pdf-files/iez/13375.pdf