@article{ref1,
title="Lessons learned: recent advances in understanding and preventing childhood aggression",
journal="Advances in child development and behavior",
year="2008",
author="Guerra, N. G. and Leidy, Melinda S.",
volume="36",
number="",
pages="287-330",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0065-2407",
doi="",
url="http://dx.doi.org/"
}