https://theconversation.com/fact-check-does-immigration-have-an-impact-on-wages-or-employment-83666
http://www.oecd.org/fr/emploi/emp/Editorial-and-executive-summary-FR.pdf
https://www.resolutionfoundation.org/app/uploads/2019/11/Feel-poor-work-more.pdf
http://library.fes.de/pdf-files/id/ipa/13354.pdf