https://gupea.ub.gu.se/bitstream/2077/62155/1/gupea_2077_62155_1.pdf
https://www.instituteforgovernment.org.uk/sites/default/files/publications/IfG_Brexit_Euro_Court_Justice_WEB.pdf
https://reprints.forrester.com/#/assets/2/452/RES157256/reports
https://www.eca.europa.eu/Lists/News/NEWS1801_16/INSR_SSM2_EN.pdf