October 2008 - Working Paper 666
August 2003 - Staff Report 319
Published In: Review of Economic Studies
(Vol. 70, No. 4, October 2003, pp. 715-41)
July 2003 - Quarterly Review 2732
Published In: Advances in economics and econometrics: Theory and applications
(Vol. 3, 2003, pp. 123-150)
November 2000 - Staff Report 280
Published In: American Economic Review
(Vol. 91, No. 1, March 2001, pp. 149-166)
Published In: Macroeconomic Dynamics
(June 1997)
December 1996 - Quarterly Review 2012
December 1996 - Staff Report 227
Published In: European Economic Review
(Vol. 41, No. 6, June 1997, pp. 1201-1249)