TY  - JOUR
A1  - Angrist, J.
A1  - Imbens, G.W.
A1  - Rubin, D.
T1  - Identification of causal effects using instrumental variables
Y1  - 1996
DO  - 10.1080/01621459.1996.10476902
JF  - Journal of the American Statistical Association
VL  - 91
IS  - 434

ER  -