@article{ref1,
title="Aggressive interactions in a kindergarten group",
journal="Aggressive behavior",
year="1982",
author="Haug, G and Hemminger, H and Schumacher, A",
volume="8",
number="2",
pages="238-241",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0096-140X",
doi="",
url="http://dx.doi.org/"
}