https://corporateeurope.org/sites/default/files/attachments/recruitment_errors.pdf
https://www.esri.ie/system/files/publications/SUSTAT128_2.pdf
http://norden.diva-portal.org/smash/get/diva2:1095959/FULLTEXT02.pdf
https://www.bruegel.org/sites/default/files/2024-07/Nicolas%20book_online.pdf