TY  - JOUR
A1  - Hotz, V.J.
A1  - Mullin, C.
A1  - Sanders, S. 
T1  - Bounding Causal Effects Using Data from a Contaminated Natural Experiment: Analyzing the Effects of Teenage Childbearing
Y1  - 1997
DO  - 10.2307/2971732
JF  - Review of Economic Studies 
VL  - 64
IS  - 4

ER  -