http://ftp.iza.org/dp9466.pdf
http://wir2018.wid.world/files/download/wir2018-summary-german.pdf
https://advances.sciencemag.org/content/advances/6/14/eaay3539.full.pdf
https://blogs.lse.ac.uk/europpblog/2024/07/08/what-the-rise-of-chega-means-for-portuguese-democracy/