@article{ref1,
title="Mass murder in perspective: guest editor's introduction",
journal="Homicide studies",
year="2014",
author="Levin, J.",
volume="18",
number="1",
pages="3-6",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1088-7679",
doi="10.1177/1088767913514406",
url="http://dx.doi.org/10.1177/1088767913514406"
}