TY  - JOUR
TI  - The role of the propensity score in estimating dose-response functions
AU  - Guido W. Imbens
JO  - Biometrika
PY  - 2000
VL  - 87
IS  - 3
DO  - 10.1093/biomet/87.3.706
UR  - https://doi.org/10.1093/biomet/87.3.706
ER  -