@article{ref1,
title="Trajectories of physical aggression from toddlerhood to middle childhood: predictors, correlates, and outcomes",
journal="Monographs of the society for research in child development",
year="2004",
author="",
volume="69",
number="4",
pages="vii, 1-129",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0037-976X",
doi="10.1111/j.0037-976X.2004.00312.x",
url="http://dx.doi.org/10.1111/j.0037-976X.2004.00312.x"
}