1. State space modeling of time series;Aoki,1987
2. Are output fluctuations transitory?;Campbell;NBER Meeting on Economics Fluctuations,1986
3. The cyclical component of US economic activity;Clark,1986
4. How big is the random walk in GNP?;Cochrane,1986
5. On the stochastic realization problem;Lindquist;Siam Journal of Control and Optimization,1979