@article{ref1,
title="Observational validation of a peer nomination technique for identifying aggressive, withdrawn, and aggressive/withdrawn children",
journal="Journal of consulting and clinical psychology",
year="1987",
author="Serbin, Lisa A. and Lyons, J. A. and Marchessault, K. and Schwartzman, Alex E. and Ledingham, J. E.",
volume="55",
number="1",
pages="109-110",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-006X",
doi="",
url="http://dx.doi.org/"
}