1. Belke, A. (2010a), Financial Crisis, Global Liquidity and Monetary Exit Strategies, Discussion Papers of DIW Berlin, 995.
2. Belke, A. (2010b), Driven by the Markets? ECB Sovereign Bond Purchases and the Securities Markets Programme, Intereconomics, 45(6), 357–363, https://www.intereconomics.eu/contents/year/2010/number/6/article/driven-by-the-markets-ecb-sovereign-bond-purchases-and-the-securities-markets-programme.html (26. Juli 2021).
3. Bini Smaghi, L. (2009), Conventional and unconventional monetary policy, Keynote lecture by Mr Lorenzo Bini Smaghi, Member of the Executive Board of the European Central Bank, at the International Center for Monetary and Banking Studies (ICMB), Geneva, 28. April.
4. Boonstra, W. (2019), Should the ECB consider issuing its own securities?, Rabobank/RaboResearch, Utrecht, 13. Februar.
5. Bundesverfassungsgericht (2020), Urteil des Zweiten Senats zum PSPP-Programm v. 5. Mai 2020 — 2 BvR 859/15, 2 BvR 980/16, 2 BvR 2006/15, 2 BvR 1651/15 — Rn. 1 — 237, http://www.bverfg.de/e/rs20200505_2bvr085915.html (7. Mai 2020).