
https://reclaimfinance.org/site/wp-content/uploads/2020/05/Rapport-Quantitative-easing-le-sale-secret-de-la-BCE-RF.pdf

https://www.ecb.europa.eu/pub/pdf/ecbu/eb201703.en.pdf?ea7747ab0ef3b038300a8d51a3a95313

https://www.nber.org/system/files/working_papers/w27488/w27488.pdf