3Dickey D A, W A Fuller. Distribution of the estimators for autoregressive time series with a unit root [ J ]. Journal of the American Statistical Association, 1979,74:427 - 431.
4Engle R F, C W J Granger. Cointegration and error correction: representation, estimation, and testing[ J ]. Econometrica, 1987,55:251 -276.
5Gordon R H. An Optimal Taxation Approach to Fiscal Federalism[ J]. Quarterly Journal of Economics, 1983, 98 (4) :567 -586.
6Im K S, Pesaran M, Y Shin. Testing for unit roots in heterogeneous panels [ J ]. Journal of Econometrics, 2003,115:53 - 74.
7Kao C. Spurious regression and residual - based tests for cointegration in panel data[ J]. Journal of Econometrics, 1999,90 : 1 -44.
8Levin A, Lin C F,C S Chu. Unit root tests in panel data: Asymptotic and finite -sample properties[J]. Journal of Econometrics,2002,108:1 -24.
9Oates W. Fiscal Federalism[ M]. New York : Harcourt Brace Jovanovich,1999.
10Oates W. "An Essay on Fiscal Feder'alism" [ J ]. Journal of Economic Literature, 1999,37 ( 3 ) : 1120 -1149.