# INFERENCE IN LINEAR TIME SERIES MODELS WITH SOME UNIT ROOTS

@article{Sims1990INFERENCEIL, title={INFERENCE IN LINEAR TIME SERIES MODELS WITH SOME UNIT ROOTS}, author={Christopher A. Sims and James H. Stock and Mark W. Watson}, journal={Econometrica}, year={1990}, volume={58}, pages={113-144} }

This paper considers estimation and hypothesis testing in linear time series when some or all of the variables have (possibly multiple) unit roots. The motivating example is a vector autoregression with some unit roots in the companion matrix, which might include polynomials in time as regressors. Parameters that can be written as coefficients on mean zero, nonintegrated regressors have jointly normal asymptotic distribution, converging at the rate of T(superscript "one-half") In general, the…

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