https://www.boeckler.de/pdf/p_wsi_report_39e_2018.pdf
https://www.wsi.de/download-proxy-for-faust/download-pdf?url=http%3A%2F%2F217.89.182.78%3A451%2Fabfrage_digi.fau%2Fp_wsi_report_63e_2021.pdf%3Fprj%3Dhbs-abfrage%26ab_dm%3D1%26ab_zeig%3D9200%26ab_diginr%3D8483
https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef18037en.pdf
https://www.strategie.gouv.fr/publications/metiers-2030-perspectives-de-recrutement-region