http://www.assemblee-nationale.fr/15/propositions/pion0542.asp
https://www.cdu.de/system/tdf/media/dokumente/ergebnis_sondierung_cdu_csu_spd_120118_2.pdf?file=1&type=field_collection_item&id=12434
http://www.ips-journal.eu/storage/topics/european-union/article/show/stars-in-their-eyes-2515/
https://www.iedonline.eu/download/2017/IED-REPORT-Bratislava-2017.pdf
https://www.opendemocracy.net/can-europe-make-it/nicola-bertoldi/are-we-living-through-new-weimar-era-constructive-resolutions-for?utm_source=Daily+Newsletter&utm_campaign=367a142d39-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-367a142d39-407405485
http://www.elperiodico.com/es/politica/20171226/que-es-tabarnia-propuesta-secesion-barcelona-tarragona-resto-cataluna-6517873
https://www.socialeurope.eu/poland-crossroads-authoritarianism-democracy
https://ec.europa.eu/research/evaluations/pdf/archive/other_reports_studies_and_documents/hlg_2017_report.pdf
https://www.nytimes.com/2017/11/28/world/europe/populism-eastern-europe.html?rref=collection%2Ftimestopic%2FEuropean%20Union&action=click&contentCollection=timestopics®ion=stream&module=stream_unit&version=latest&contentPlacement=2&pgtype=collection