TY  - JOUR
TI  - Inference with Difference-in-Differences and Other Panel Data
AU  - Stephen G. Donald
AU  - Kevin Lang
JO  - The Review of Economics and Statistics
PY  - 2007
VL  - 89
IS  - 2
DO  - 10.1162/rest.89.2.221
UR  - https://doi.org/10.1162/rest.89.2.221
ER  -