https://www.jean-jaures.org/wp-content/uploads/2023/10/Forging_Europes_Leadership.pdf
https://visegradinsight.eu/whips-and-chains/?utm_source=VI+WWW&utm_campaign=03b4a33b7d-EMAIL_CAMPAIGN_4_19_2018_COPY_01&utm_medium=email&utm_term=0_3598053f62-03b4a33b7d-150926415
https://www.openglobalrights.org/how-to-identify-a-contemporary-authoritarian-regime/?lang=English
https://blogs.lse.ac.uk/europpblog/2021/10/28/what-explains-the-fragmentation-of-the-german-party-system/