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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)
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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)