
http://www.cesifo-group.de/portal/page/portal/DocBase_Service/studien/Studie-2017-Felbermayr-etal-Brexit-79843.pdf

http://visegradinsight.eu/app/uploads/2019/11/EaP-2030-Trends.pdf

https://www.tni.org/files/publication-downloads/marketforces-report-tni-statewatch.pdf