The Transition from National Currencies to the Euro, (joint with Charles Goodhart), Economics Letters, April 2003 Volume 79/1.

Do the ECB and the Fed really need to Cooperate? Optimal Monetary Policy in a Two-Country World, Journal of Monetary Economics, May 2004, Volume 51, 4, pp. 573-779.

Persistence Without too much Price Stickiness: The role of Factor Utilization, (joint with K.Neiss) Review of Economic Dynamics, Volume 8, Issue 1, January 2005, pp. 231-255

Does it Cost to be Virtuous? The Macroeconomic Effects of Fiscal Constraints (joint with Fabio Canova), 2004,  NBER International Macroeconomic Annual (editors R. Clarida, J. Frenkel, F. Giavazzi)

"The elusive costs and the immaterial gains of fiscal constraints", with Fabio Canova, Journal of Public Economics, Volume 90, Issues 8-9 , September 2006, Pages 1391-1414

Price Dispersions in Monetary Unions: The Role of Fiscal Shocks,” with Fabio Canova, Economic Journal, (London), 520, V. 117, p. 713-737. (2007)

"The structural dynamics of output growth and inflation: some international evidence,” with Luca Gambetti and Fabio Canova, Economic Journal (London),   519 V. 117 p. C167 - C191 (2007)


The Unbearable Tightness of Being in a Monetary Union: Fiscal Restrictions and Regional Stability,” with Vanghelis Vassilatos, European Economic Review , 6  V. 51 1 p. 1492-1513 (2007).


Structural Dynamics of US output and Inflation: What explains the changes? with Luca Gambetti and Fabio Canova, Journal of Money, Credit and Banking Volume 40 Issue 2-3, Pages 369 – 388, (2008).


"Gains from Coordination in a Multi-Sector Open Economy: Does it Pay to be Different?" with Zheng Liu, Journal of Economic Dynamics and Control Vol. 32(7),  pp.2085-2117, (2008).

"The effects of fiscal shocks on employment and the real wage," International Economic Review, Vol. 50, Issue 1, pp. 217-244, February 2009