@article{ref1,
title="An analysis of aggression and identification in young offenders by the study of perceptual development",
journal="Human development",
year="1966",
author="Kragh, U. and Kroon, T.",
volume="9",
number="4",
pages="209-221",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0018-716X",
doi="",
url="http://dx.doi.org/"
}