5Enger R, Granger C. Co-integration and Error Correction : Representation, Estimation and Testing [ J ]. Econometrica, 1987, 35:391 - 407.
6Granger C W J. Some Properties of Time Series Data and Their Use inEconometric Model Specification [ J ]. Journal of Econometrics, 1981, (16) :120 -130.
7Johansen S. Statistical Analysis of Co-integration Vectors [ J ]. Journal of Economic Dynamics and control, 1958, (12) : 231 -254.
8Johansen S. Estimation and Hypothesis Testing of Co-integration Vectors in Gaussian Vector Autoregressive Models [ J ]. Econometrica, 1991,59(6) : 1551 - 1580.