4Dickey David A, Fuller Wayne A. Likelihood Ratio Statistics for Autoregressive Time Series with a Unitroot [J].Econometrica, 1981,49(4).
5Engle R F, Granger C W J.Co-integration and Error Correction: Representation, Estimation, and Testing[J].Eeonometriea,1987,55(2).
6Granger C W J.Investigating Causal Relations by Econometric Models and Cross-soectral Methods[J].Econometrica,1969.37(3).
7Soren J. Statistical Analysis of Cointegration Vectors [J].Journal of Economic Dynamics and Control,1988,(12).
8Soren J, Katarina J.Maximum Likelihood Estimation and inference on Cointegration-with Applications to The Demand for Money[J]. Oxford Bulletin of Economics & Statistics,1990,52(2).