https://ec.europa.eu/info/sites/info/files/com-2018-890-final.pdf
https://www.instituteforgovernment.org.uk/sites/default/files/publications/IfG_Brexit_dispute_resolution_WEB.pdf
http://www.cesifo-group.de/portal/page/portal/DocBase_Service/studien/Studie-2017-Felbermayr-etal-Brexit-79843.pdf
https://ukandeu.ac.uk/wp-content/uploads/2020/05/UKICE-Post-Brexit-Gov-NI-Report.pdf