https://www.socialeurope.eu/the-german-debt-brake-reform-urgent
https://www.bundesfinanzministerium.de/Content/DE/Downloads/Broschueren_Bestellservice/2019-08-08-die-wichtigsten-steuern-im-internationalen-vergleich-2018-ausgabe-2019.pdf?__blob=publicationFile&v=5
https://securingdemocracy.gmfus.org/wp-content/uploads/2020/08/ASD-Covert-Foreign-Money.pdf
https://www.socialeurope.eu/2017/06/eurozones-hidden-strength/