@article{ref1,
title="Crime Modeling",
journal="Operations research",
year="2002",
author="Blumstein, Alfred",
volume="50",
number="1",
pages="16-24",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0030-364X",
doi="",
url="http://dx.doi.org/"
}