@article{Zeng1993,
author = {Zeng, Yi and Tu, Ping and Gu, Baochang and Xu, Yi and Li, Bohua and Li, Yongpiing},
title= {Causes and implications of the recent increase in the reported sex ratio at birth in China},
year = {1993},
doi = {10.2307/2938438},
URL = {https://doi.org/10.2307/2938438},
volume = {19},
number = {2},
pages = {283--302},
}