2O. Blanehard, J. Simon. The Long and Large Decline in U. S. Output Volatility [J]. Brookings Papers on Economic Activity, 2001, 32 (1): 135-164.
3J. H. Stock, M. W. Watson. Has the Business Cycle Changed and Why? [A]. M. Gertler, K. Rogoff. NBER Mac- roeconomics Manual [C]. Cambridge: The MIT Press, 2002.
4A. Eggers, Y. Ioannides. The Role of Output Composition in the Stabilization of U. S. Output Growth [J]. Journal of Macroeconomics, 2006, 28 (3):585-595.