@article{ref1,
title="The problem of mass casualties",
journal="Medical arts and sciences",
year="1956",
author="Hays, S. B.",
volume="10",
number="3",
pages="52-58",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0025-6994",
doi="",
url="http://dx.doi.org/"
}