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Constructing seasonally adjusted data with time-varying confidence intervals
Koopman, Siem Jan, (2002)
Periodic unobserved cycles in seasonal time series with an application to US unemployment
Koopman, Siem Jan, (2006)
What's real about the business cycle?
Hamilton, James D., (2005)
Futures Markets Efficiency: evidence from unevenly spaced contracts
Newbold, Paul, (1999)
Testing seasonality and efficiency in commodity futures markets
Newbold, Paul,
Intangible capital and firms productivity
Marrocu, Emanuela, (2010)