https://www.boeckler.de/pdf/p_imk_report_141e_2018.pdf
https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef18005en.pdf
https://www.socialeurope.eu/2017/07/real-measure-inequality/
https://euractiv.fr/news/pourquoi-lindustrie-automobile-europeenne-est-elle-en-crise/