@article{ref1,
title="Stages in the development of aggressive behavior in early childhood",
journal="Aggressive behavior",
year="1985",
author="Szegal, B",
volume="11",
number="4",
pages="315-321",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0096-140X",
doi="",
url="http://dx.doi.org/"
}