@article{ref1,
title="The Preschool Behavioral Classification Project: a follow-up report",
journal="Journal of abnormal child psychology",
year="1977",
author="Baker, R. P. and Dreger, P. M.",
volume="5",
number="3",
pages="241-248",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0091-0627",
doi="",
url="http://dx.doi.org/"
}