http://invs.santepubliquefrance.fr/publications/etat_sante_2017/ESP2017_Ouvrage_complet_vdef.pdf
https://cepr.org/sites/default/files/policy_insights/PolicyInsight92.pdf
https://www.boeckler.de/pdf/p_imk_report_152e_2020.pdf
https://www.socialeurope.eu/2017/06/eurozones-hidden-strength/