http://ec.europa.eu/social/main.jsp?catId=1143&intPageId=3193&langId=en/
https://www.boeckler.de/data/downloads/IMK/FMM%20Konferenz%202023/v_2023_10_20_goekten.pdf
https://www.brookings.edu/wp-content/uploads/2021/06/Moving-Up.pdf
http://www.pewglobal.org/2017/06/15/post-brexit-europeans-more-favorable-toward-eu/?cmpid=BBBXT061617_BIZ&utm_medium=email&utm_source=newsletter&utm