https://arxiv.org/ftp/arxiv/papers/2004/2004.01014.pdf
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://bristoluniversitypressdigital.com/downloadpdf/journals/emsoc/4/2/article-p199.xml
https://www.opendemocracy.net/can-europe-make-it/alessio-colonnelli/relaunching-french-very-messy-business?utm_source=Daily+Newsletter&utm_campaign=420bbab922-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-420bbab922-407405485