Published in American Economic Review, (vol. 110, no. 6, June 2020, pp.1635-1672), https://doi.org/10.1257/aer.20170045.

Originally presented at the Thirty-fourth Annual Economic Policy Conference of the Federal Reserve Bank of St. Louis and published as part of their conference proceedings (Federal Reserve Bank of St. Louis Review, July/August 2010, 92 (4), pp. 303-10). This revised version was concomitantly published in the Quarterly Review. https://doi.org/10.20955/r.92.303-10

Published in: Econometrica (Vol. 77, No. 2, March 2009, pp. 403-426) https://doi.org/10.3982/ECTA7250.

Published in: Journal of Monetary Economics (Vol. 57, Issue 8, November 2010, pp. 913-930) https://doi.org/10.1016/j.jmoneco.2010.10.006.

Published in: New Palgrave Dictionary of Economics (2nd ed., 2008) https://doi.org/10.1057/9780230226203.0806.

Published in: Journal of Political Economy (Vol. 115, No. 5, October 2007, pp. 770-819) https://doi.org/10.1086/524203.

Published in: Review of Economic Studies (Vol. 73, No. 4, October 2006, pp. 983-1007) https://doi.org/10.1111/j.1467-937X.2006.00405.x.

Published in: Journal of Political Economy (Vol. 113, No. 3, June 2005, pp. 463-484) https://doi.org/10.1086/429804.

Published in: International Economic Review (Vol. 46, No. 2, May 2005, pp. 495-522) https://doi.org/10.1111/j.1468-2354.2005.00331.x.

Published in: Journal of Economic Theory (Vol. 142, No. 1, September 2008, pp. 247-258) https://doi.org/10.1016/j.jet.2006.07.005.