https://www.linkiesta.it/2020/05/cosa-ha-davvero-deciso-la-corte-tedesca-bce-quantitative-easing/
https://gabriel-zucman.eu/files/TWZ2020b.pdf
https://www.ecb.europa.eu/stats/accesstofinancesofenterprises/pdf/ecb.safe202005~c4b89a43b9.en.pdf
https://www.bbc.com/news/world-asia-india-64899487