@article{ref1,
title="Observations on Some Causes of the Excess of the Mortality of Males above That of Females",
journal="Philosophical transactions of the Royal Society of London",
year="1786",
author="Clarke, Joseph and Price, Richard and Register, B. H.",
volume="76",
number="",
pages="349-364",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0261-0523",
doi="",
url="http://dx.doi.org/"
}