第二篇已有，请帮助上传第一篇，谢谢。

第一篇：

Author Info ：Barthelemy, F.Lubrano, M.
论文名字：Properties of the ADF Unit Root Test for Models with Trends and Cycles

出处：http://ideas.repec.org/p/fth/aixmeq/96a13.html 

第二篇：

Author Info Sampson, Michael

The Effect of Parameter Uncertainty on Forecast Variances and Confidence Intervals for Unit Root and Trend Stationary Time-Series Models

Article provided by John Wiley & Sons, Ltd. in its journal Journal of Applied Econometrics.

出处：http://ideas.repec.org/a/jae/japmet/v6y1991i1p67-76.html 

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