https://www.politico.eu/article/christine-lagarde-profile-european-central-bank/
https://www.diw.de/documents/publikationen/73/diw_01.c.578096.de/18-7-3.pdf
http://www.europarl.europa.eu/ftu/pdf/en/FTU_5.9.1.pdf
https://www.bancaditalia.it/compiti/riserve-portafoglio-rischi/cis/Presentazione_CIS_5.07.2021.pdf?language_id=1