TY  - JOUR
TI  - Testing for unit roots in heterogeneous panels
AU  - Kyung So Im
AU  - M. Hashem Pesaran
AU  - Yongcheol Shin
JO  - Journal of Econometrics
PY  - 2003
VL  - 115
IS  - 1
DO  - 10.1016/s0304-4076(03)00092-7
UR  - https://doi.org/10.1016/s0304-4076(03)00092-7
ER  -