@article{ref1,
title="Assertive behavior in children: a step toward a theory of aggression",
journal="Monographs of the society for research in child development",
year="1967",
author="Patterson, G. R. and Littman, R. A. and Bricker, W.",
volume="32",
number="5",
pages="1-43",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0037-976X",
doi="",
url="http://dx.doi.org/"
}