https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef20001en.pdf
http://library.fes.de/pdf-files/dialog/13464.pdf
https://www.epi.org/publication/trumps-deportation-agenda-will-destroy-millions-of-jobs-both-immigrants-and-u-s-born-workers-would-suffer-job-losses-particularly-in-construction-and-child-care/
https://www.elysee.fr/emmanuel-macron/2020/05/26/plus-verte-et-plus-competitive-notre-plan-de-soutien-a-la-filiere-automobile