http://www.resolutionfoundation.org/app/uploads/2017/01/Audit-2017.pdf
Introduction Context Role of Germany The Taxes Considered Grand Themes of the European Dialogue ...
https://www.ifo.de/DocDL/EEAG-2019-executive-summary.pdf
https://www.eca.europa.eu/Lists/ECADocuments/SR22_17/SR_External_consultants_EN.pdf