TY  - JOUR
TI  - Nonparametric Estimation of Average Treatment Effects Under Exogeneity: A Review
AU  - Guido W. Imbens
JO  - The Review of Economics and Statistics
PY  - 2004
VL  - 86
IS  - 1
DO  - 10.1162/003465304323023651
UR  - https://doi.org/10.1162/003465304323023651
ER  -