TY  - JOUR
TI  - Difference-in-differences with variation in treatment timing
AU  - Andrew Goodman-Bacon
JO  - Journal of Econometrics
PY  - 2021
VL  - 225
IS  - 2
DO  - 10.1016/j.jeconom.2021.03.014
UR  - https://doi.org/10.1016/j.jeconom.2021.03.014
ER  -