TY  - JOUR
A1  - Levin, A.
A1  - Lin, C.F.
A1  - Chu, C. 
T1  - Unit root test in panel data: Asymptotic and finite sample properties
Y1  - 2002
DO  - 10.1016/S0304-4076(01)00098-7
JF  - Journal of Econometrics 
VL  - 108
IS  - 1

ER  -