7 Key Publications

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  Boswijk, H., Franses, P. and Haldrup, N. (1997). Multiple unit roots in periodic autoregression. Journal of Econometrics, 80(1):167--193.

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

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  Ooms, \.(. and Franses, \.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.