https://www.linkiesta.it/2020/05/cosa-ha-davvero-deciso-la-corte-tedesca-bce-quantitative-easing/
http://www.ecb.europa.eu/pub/pdf/other/ebart201703_01.en.pdf
https://www.crfb.org/blogs/whats-latest-build-back-better-framework
http://www.ips-journal.eu/topics/european-union/article/show/no-more-penny-pinching-2076/