https://www.etui.org/content/download/36365/365328/file/WP+2019+07-wages-ST-WEB.pdf
https://www.brookings.edu/wp-content/uploads/2020/03/Del-Negro-et-al-Conference-Draft.pdf
https://www.boeckler.de/fpdf/HBS-008373/p_wsi_report_77e_2022.pdf
https://www.socialeurope.eu/2017/07/real-measure-inequality/