https://ec.europa.eu/commission/publications/position-paper-transmitted-eu27-governance_en
https://www.niesr.ac.uk/sites/default/files/publications/NIESR%20Report%20Brexit%20-%202018-11-26.pdf
https://bdi.eu/media/pressecenter/#/artikel/news/brexit-wirft-seine-schatten-voraus/
https://www.esri.ie/system/files/publications/QEC2019SPR_SA_Bergin.pdf