@article{ref1,
title="The positive case for school-based violence prevention programs",
journal="Health affairs (Project Hope)",
year="1994",
author="Yung, B. R. and Hammond, W. Rodney",
volume="13",
number="4",
pages="170-3; discussion 174",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0278-2715",
doi="",
url="http://dx.doi.org/"
}