TY - JOUR A1 - Liu, Haoming T1 - The quality–quantity trade-off: Evidence from the relaxation of China’s one-child policy Y1 - 2014 DO - 10.1007/s00148-013-0478-4 UR - https://doi.org/10.1007/s00148-013-0478-4 VL - 27 IS - 2 ER -