@article{ref1,
title="Childhood aggression and gender: a new look at an old problem",
journal="Nebraska symposium on motivation",
year="1998",
author="Crick, Nicki R. and Werner, N. E. and Casas, J. F. and O'Brien, K. M. and Nelson, D. A. and Grotpeter, J. K. and Markon, K.",
volume="45",
number="",
pages="75-141",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0146-7875",
doi="",
url="http://dx.doi.org/"
}