https://publications.parliament.uk/pa/cm201719/cmselect/cmintrade/520/520.pdf
http://www.ibec.ie/IBEC/Press/PressPublicationsdoclib3.nsf/vPages/Newsroom~uk%27s-brexit-approach-risks-damaging-uk-irish-relations-17-01-2017/%24file/Brexit+Priorities+Report.pdf
https://ec.europa.eu/commission/sites/beta-political/files/draft_withdrawal_agreement.pdf
http://www.transfrontier.eu/regions/ireland-northern-ireland/