https://www.cbo.gov/system/files/115th-congress-2017-2018/reports/53651-outlook.pdf
https://www.linkiesta.it/2020/05/cosa-ha-davvero-deciso-la-corte-tedesca-bce-quantitative-easing/
https://www.brookings.edu/articles/the-changing-role-of-the-us-dollar/
http://www.sgi-network.org/2017/About