@article{ref1,
title="Preventing mass violence",
journal="Science",
year="2012",
author="Hamburg, David",
volume="336",
number="6083",
pages="775-775",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0036-8075",
doi="10.1126/science.1223918",
url="http://dx.doi.org/10.1126/science.1223918"
}