
http://www.progressives-zentrum.org/wp-content/uploads/2018/10/Les-Oubliés-Entretiens-sur-les-terres-où-prospère-le-vote-extrême_Das-Progressive-Zentrum_Johannes-Hillje.pdf

https://assets.ctfassets.net/rdwvqctnt75b/7iQEHtrkIbLcrUkduGmo9b/cb429a657e97cad61e61853c05c8c4d1/Hansard-Society__Audit-of-Political-Engagement-16__2019-report.pdf

https://www.opendemocracy.net/christophe-solioz/man-at-work-outside-box-bertrand-badie?utm_source=Daily+Newsletter&utm_campaign=7e428fcbf2-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-7e428fcbf2-407405485