@article{Bélanger2003,
author = {Bélanger, D. and Thi Hai Oanh, K. and Jianye, L. and Thanh Thuy, L. and Viet Thanh, P.},
title= {Are sex ratios at birth increasing in Vietnam?},
year = {2003},
doi = {10.3917/pope.302.0231},
journal = {Population (English Edition)},
volume = {58},
pages = {231--250},
}