@article{Babiarz2019,
author = {Babiarz, K.S. and Ma, P. and Song, S. and Miller, G.},
title= {Population sex imbalance in China before the one-child policy},
year = {2019},
doi = {10.4054/DemRes.2019.40.13},
volume = {40},
number = {13},
pages = {319--358},
}