@article{Bongaarts2015,
author = {Bongaarts, J. and Guilmoto, C.Z.},
title= {How many more missing women? Excess female mortality and prenatal sex selection, 1970–2050},
year = {2015},
doi = {10.1111/j.1728-4457.2015.00046.x},
volume = {41},
number = {2},
pages = {241--269},
}