TY - JOUR A1 - Li, Hongbin A1 - Yi, Junjian A1 - Zhang, Junsen T1 - Estimating the effect of the one-child policy on the sex ratio imbalance in China: Identification based on the difference-in-differences Y1 - 2011 DO - 10.1007/s13524-011-0055-y UR - https://doi.org/10.1007/s13524-011-0055-y VL - 48 IS - 4 ER -