Effects of financial system size and structure on the real economy: what do we know and what do we not know? – German Institute of Development and Sustainability (IDOS) https://www.idos-research.de/externe-publikationen/article/effects-of-financial-system-size-and-structure-on-the-real-economy-what-do-we-know-and-what-do-we-not-know/
finance literature on the effects that various financial system characteristics have