https://theconversation.com/eu-enlargement-what-does-the-future-hold-227716
http://oegfe.at/wordpress/2017/05/oegfe-umfrage-oesterreicherinnen-wuenschen-sich-eine-flexible-und-effizientere-europaeische-union/
https://www.ips-journal.eu/topics/foreign-and-security-policy/belgrade-needs-a-new-foreign-policy-7685/