https://socialeurope.eu/the-left-must-embrace-fiscal-restructuring
https://www.pass.va/content/dam/casinapioiv/pass/pdf-booklet/2025_jubilee_report.pdf
https://www.economiesuisse.ch/de/artikel/hohe-loehne-tiefe-ungleichheit-und-ein-attraktiver-standort
http://www.economics-ejournal.org/economics/journalarticles/2017-10