@article{ref1,
title="Demographic factors affecting assertive and defensive behavior in preschool children -- an ethological study",
journal="Aggressive behavior",
year="1985",
author="Weigel, RM",
volume="11",
number="1",
pages="27-40",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0096-140X",
doi="",
url="http://dx.doi.org/"
}