TY  - JOUR
A1  - Hotz, V.J.
A1  - Mullin, C.H.
A1  - Sanders, S.G.
T1  - Bounding causal effects using data from a contaminated natural experiment: Analysing the effects of teenage childbearing
Y1  - 1997
DO  - 10.2307/2971732
VL  - 64
IS  - 4

ER  -