共 5 条
- [1] Testing for unit roots in heterogeneous panels [J]. JOURNAL OF ECONOMETRICS, 2003, 115 (01) : 53 - 74
- [3] Unit root tests in panel data: asymptotic and finite-sample properties[J] . Andrew Levin,Chien-Fu Lin,Chia-Shang James Chu.Journal of Econometrics . 2002 (1)
- [4] Unit root tests for panel data [J]. JOURNAL OF INTERNATIONAL MONEY AND FINANCE, 2001, 20 (02) : 249 - 272