https://www.ifo.de/DocDL/EEAG-2019-executive-summary.pdf
https://www.boeckler.de/pdf/p_imk_study_55_2017.pdf
https://www.etui.org/sites/default/files/2020-08/Mitigating%20the%20COVID-19%20effect_2020_web.pdf
http://www.resolutionfoundation.org/app/uploads/2017/01/Audit-2017.pdf