1Bums, A. M. , and W. C. Mitchell. Measuring Business Cycles[R]. New York: National Bureau of Economic Research, 1946.
2Lucas, Robert E., Jr. Understanding Business Cycles[A] in K. Brunner, A. H. Meltzer, eds, Stabilization of the Domestic and International Economy, Carnegie-Rochester Conference Series on Public Policy 5 [C]. Amsterdam, Netherlands: North-Holland. 1977.
3European Economy: European Commission Directorate-general For Economic and Financial Affairs [J]. 2000, 2001.
4Stiroh, Kevin. Is There A New Economy [J]. Challenge, 1999, (4).
5European Economy: European Commission Directorate-general For Economic and Financial Affairs [J]. Supplement A. Econmic Trends, March/April 2001.