@article{ref1,
title="The effectiveness of school-based violence prevention programs",
journal="Archives of pediatrics and adolescent medicine",
year="2002",
author="Farrington, David P.",
volume="156",
number="8",
pages="748-749",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1072-4710",
doi="",
url="http://dx.doi.org/"
}