https://www.politico.eu/article/eu-enlargement-france-europe-russia-influence-putin/
https://blogs.lse.ac.uk/europpblog/2023/10/12/a-political-economy-model-forecast-of-the-2023-dutch-election/
http://www.pewglobal.org/2017/06/15/post-brexit-europeans-more-favorable-toward-eu/?cmpid=BBBXT061617_BIZ&utm_medium=email&utm_source=newsletter&utm
https://www.iedonline.eu/download/2017/IED-REPORT-Bratislava-2017.pdf