http://www.cobcoe.eu/files/cobcoe-brexit-report-september-2017-e-Y4G2st.pdf
https://ukandeu.ac.uk/wp-content/uploads/2021/09/Global-Britain-views-from-abroad.pdf
http://www.europarl.europa.eu/RegData/etudes/STUD/2017/602028/IPOL_STU(2017)602028_EN.pdf