Owens, Raymond E. and Sarte, Pierre-Daniel. "How Well Do Diffusion Indexes Capture Business Cycles? a Spectral Analysis," in Federal Reserve Bank of Richmond. "Fall 2005, Vol. 91, No. 4," Economic Quarterly (Federal Reserve Bank of Richmond) (Fall 2005) : 23-42. https://fraser.stlouisfed.org/title/960/item/477427/toc/502042 , accessed on April 19, 2024.