7 Key Publications

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  Franses, P.H., Boswijk, H. and Haldrup, N. (1997). Multiple unit roots in periodic autoregression Journal of Econometrics, 80:167--193.

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  Atkinson, A.C., Koopman, S.J. and Shephard, N. (1997). Detecting shocks: Outliers and breaks in time series Journal of Econometrics, 80(2):387--422.

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  Koopman, S.J. (1997). Exact initial kalman filtering and smoothing for nonstationary time series models Journal of the American Statistical Association, 92(440):1630--1638.

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  Franses, P.H., Hoek, H. and Paap, R. (1997). Bayesian analysis of seasonal unit roots and seasonal mean shifts Journal of Econometrics, 78:359--380.

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  Ooms, M.(. and Franses, P.H. (1997). On periodic correlations between estimated seasonal and nonseasonal components for US and German unemployment Journal of Business and Economic Statistics, 15(4):470--481.

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  Harvey, A., Koopman, S.J. and Riani, M. (1997). The modeling and seasonal adjustment of weekly observations Journal of Business and Economic Statistics, 15(3):354--368.

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  Lumsdaine, R. and Papell, D. (1997). Multiple trend breaks and the unit root hypothesis Review of Economics and Statistics, LXXIX(2):212--218.