@article{Guilmoto2011,
author = {Guilmoto, C.Z. and Ren, Q.},
title= {Socio-economic differentials in birth masculinity in China},
year = {2011},
doi = {10.1111/j.1467-7660.2011.01733.x},
volume = {42},
number = {5},
pages = {1269--1296},
}