TY  - JOUR
A1  - Li, H.
A1  - Zhang, J.
A1  - Zhu, Y.
T1  - The quantity-quality trade-off of children in a developing country: Identification using Chinese twins
Y1  - 2008
DO  - 10.1353/dem.2008.0006
JF  - Demography
VL  - 45
IS  - 1

ER  -