https://www.otto-brenner-stiftung.de/fileadmin/user_data/stiftung/Aktuelles/AH93/AH_93_Haller_Web.pdf
https://www.socialeurope.eu/the-crisis-of-the-french-socialist-party-does-it-still-have-a-future
https://www.socialeurope.eu/sweden-achievements-uncertainty
https://www.socialeurope.eu/eu-member-state-determined-others-greek-tragedy
http://www.ips-journal.eu/topics/european-union/article/show/say-it-with-feeling-2184/
http://www.ips-journal.eu/in-focus/migration-and-the-european-left/article/show/turn-left-the-other-left-2179/
http://www.diw.de/documents/publikationen/73/diw_01.c.562050.de/17-29.pdf
http://hungarianspectrum.org/2017/07/19/meeting-of-the-minds-benjamin-netanyahu-and-the-visegrad-4/
http://blogs.lse.ac.uk/brexit/2017/07/19/euroscepticism-has-taken-hold-across-the-eu-but-it-has-many-different-roots/
https://www.thetimes.co.uk/edition/world/poland-defies-eu-with-power-grab-for-supreme-court-206ddjnnk