@article{ref1,
title="Problem-solving strategies in aggressive and nonaggressive children",
journal="Aggressive behavior",
year="1988",
author="KeltikangasJarvinen, L and Kangas, Peter",
volume="14",
number="4",
pages="255-264",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0096-140X",
doi="",
url="http://dx.doi.org/"
}