“Fiscal Policy in Recessions”, in Akerkof, G., O. Blanchard, D. Romer and J. Stiglitz, eds: What Have We Learned? Macroeconomic Policy After the Crisis, proceedings of a conference at the IMF, chapter 16, pages 193-208, MIT Press, 2014;

“The Austerity Myth: Gain Without Pain?”, in A. Alesina and F. Giavazzi, eds: Fiscal Policy After the Financial Crisis, NBER and Chicago University Press, 2012

“Taxes and the Labor Market”, in Fiscal Policy and Macroeconomic Performance, Series on Central Banking, Analysis, and Economic Performance, Central Bank of Chile, L. Céspedes and J. Gali, eds., 2011 (with T. Monacelli and A. Trigari).

“Social Spending in Colombia: Analysis and Proposals”, in: Institutional Reform in Colombia, MIT Press 2005.

“The Budget Process in Colombia: Analysis and Proposals”, in: Institutional Reform in Colombia, MIT Press, 2005 (with U. Ayala);

“Government Weakness, Fragmentation, and Fiscal Outcomes: Evidence from OECD Countries”; in J. Poterba and J. Von Hagen, eds.: Fiscal Institutions and Fiscal Performance, NBER and Chicago University Press, 1999 (with Y. Kontopoulos)

“Budget Deficits and Budget Institutions”, in J. Poterba and J. Von Hagen, eds.: Fiscal Institutions and Fiscal Performance, NBER and Chicago University Press, 1999 (with A. Alesina);.

“The Political Economy of Fiscal Consolidations”, in T. M. Andersen and K. O. Moene, eds.: Public Policy and Economic Theory (proceedings of the Symposium for the Hundredth Anniversary of the Scandinavian Journal of Economics), Blackwell Publishers, Oxford, 1998;

“Sustainability of Public Finances”, (paper presented at the European Monetary Institute, the Bundesbank, and the European Commission in the Fall 1997); published as a book by CEPR and ZEI, February 1998 (with R. Strauch and J. Von Hagen);

"The Politics of Growth: a Survey", in V. Bergstrom, ed.: Government and Growth, Clarendon Press, Oxford, 1997 (with A. Alesina);

“Fiscal Policy and Savings in Latin America in Good and Bad Times”, in: Hausman, R. and H. Reisen, eds.: Promoting Savings in Latin America, Organization for Economic Development and Inter-American Development Bank, 1997 (with M. Gavin);

“The Italian Budget Process: Analysis and Proposals”, in: Problemi di Politica Economica in Italia, Il Sole 24 Ore, 1996 (with A. Alesina and M. Mare’, in Italian);