@article{Li2000b,
author = {Li, N. and Feldman, M.W. and Tuljapurkar, S.},
title= {Sex ratio at birth and son preference},
year = {2000b},
doi = {10.1080/08898480009525475},
journal = {Mathematical Population Studies},
volume = {8},
number = {1},
pages = {91--107},
}