@article{econhot_econhot-cited-091c878406b1ab86, title = {Testing for unit roots in heterogeneous panels}, author = {Kyung So Im and M. Hashem Pesaran and Yongcheol Shin}, journal = {Journal of Econometrics}, year = {2003}, volume = {115}, number = {1}, pages = {53-74}, doi = {10.1016/s0304-4076(03)00092-7}, url = {https://doi.org/10.1016/s0304-4076(03)00092-7} }