https://www.linkiesta.it/2020/05/cosa-ha-davvero-deciso-la-corte-tedesca-bce-quantitative-easing/
https://www.cesifo-group.de/DocDL/EEAG-2018.pdf
https://www.riksbank.se/sv/press-och-publicerat/nyheter-och-pressmeddelanden/pressmeddelanden/2019/reporantan-hojs-till-noll-procent/
https://www.persee.fr/doc/rfeco_0769-0479_1995_num_10_2_978