https://www.ipg-journal.de/interviews/artikel/die-gruene-falle-3380/
https://www.politico.eu/article/belgium-break-up-flanders-wallonia-tom-van-grieken-vlaams-belang-far-right/
https://visegradinsight.eu/perfect-storm-covid19-eurosceptic-poland-hungary/
https://theconversation.com/crisis-del-regimen-democratico-la-dominacion-de-los-partidos-politicos-en-espana-226276