TY - JOUR A1 - Zhai, Z. A1 - Zhang, X. A1 - Jin, Y. T1 - Demographic consequences of an immediate transition to a universal two-child policy (Li ji quan mian fang kai er tai zheng ce de ren kou xue hou guo fen xi) Y1 - 2014 JF - Population Research (Ren kou yan jiu) VL - 2 ER -