@article{ref1,
title="Early parental deprivation and later behavioural outcomes: cluster analysis study of normal and abnormal groups",
journal="Australian and New Zealand journal of psychiatry",
year="1974",
author="Koller, K. M. and Williams, W. T.",
volume="8",
number="2",
pages="89-96",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0004-8674",
doi="",
url="http://dx.doi.org/"
}