TY  - JOUR
A1  - Heckman, J.J.
A1  - Ichimura, H.
A1  - Todd, P.E. 
T1  - Matching as an econometric evaluation estimator: Evidence from evaluating a job training programme
Y1  - 1997
DO  - 10.2307/2971733
JF  - Review of Economic Studies 
VL  - 64
IS  - 4

ER  -