TY  - JOUR
TI  - Semiparametric Difference-in-Differences Estimators
AU  - Alberto Abadie
JO  - The Review of Economic Studies
PY  - 2004
VL  - 72
IS  - 1
DO  - 10.1111/0034-6527.00321
UR  - https://doi.org/10.1111/0034-6527.00321
ER  -