http://www.cesifo-group.de/portal/page/portal/DocBase_Service/studien/Studie-2017-Felbermayr-etal-Brexit-79843.pdf
https://wiiw.ac.at/time-for-change-in-eu-economic-policy-dlp-6514.pdf
https://www.socialeurope.eu/2017/07/what-can-we-learn-from-the-nordic-model/