@article{Zhang1995,
author = {Zhang, X.  and Sasaki, S. and Kesteloot, H.},
title= {The sex ratio of mortality and its secular trends},
year = {1995},
doi = {10.1093/ije/24.4.720},
journal = {International Journal of Epidemiology},
volume = {24},
pages = {720--729},
}