Long-term Public Debt and the Fiscal Theory of the Price Level (with G. Bloise), 2005.

An obtrusive Remark on Capital and Comparative Statics (with G. Bloise), 2005.

Risk and Intermediation in a Dual Financial Market Economy (with G. Bloise), 2004. Published in Research in Economics, 257-279, 59, 2005.

Optimal Debt Contracts and Moral Hazard along the Business Cycle (with P. Siconolfi), 2002. Published in Economic Theory, 75-109, 24, 2004.

Credit Markets, Intermediation and the Macroeconomy, 2001. Published in Boot and Thakor (eds.), Credit, Intermediation, and the Macroeconomy: Readings and Perspectives in Modern Financial Theory, Oxford: OUP, 2004.