https://freedomhouse.org/report/freedom-world/2021/democracy-under-siege
https://ec.europa.eu/anti-fraud/sites/antifraud/files/olaf_report_2016_en.pdf
http://www.ips-journal.eu/regions/europe/article/show/game-set-and-match-2118/
https://visegradinsight.eu/central-european-nationalisms/