By Doug Campbell
Bryan, Kevin A., Brian D. Minton, and Pierre-Daniel G. Sarte. "The Evolution of City Population Density in the United States." Federal Reserve Bank of Richmond Economic Quarterly, Fall 2007, vol. 93, no. 4, pp. 341-360.
Agarwal, Sumit , Chunlin Liu, and Nicholas S. Souleles. "The Reaction of Consumer Spending and Debt to Tax Rebates: Evidence from Consumer Credit Data." Federal Reserve Bank of Philadelphia Working Paper 07-34, November 2007.
Kambhu, John, Til Schuermann, and Kevin J. Stiroh. "Hedge Funds, Financial Intermediation, and Systemic Risk."Federal Reserve Bank of New York Economic Policy Review, December 2007, vol. 13, no. 3, pp. 1-18.