https://www.esri.ie/system/files/publications/RS158_0.pdf
http://www.ips-journal.eu/topics/human-rights/article/show/lets-not-lose-our-thread-2155/
https://www.socialeurope.eu/2017/06/answer-wages-not-capital/
https://english.elpais.com/international/2023-04-17/the-underground-bankers-of-the-people-smuggling-business.html