@article{ref1,
title="Porteus maze differ4ences between psychopathic and non-psychopathic criminals",
journal="British journal of social and clinical psychology",
year="1968",
author="Schalling, D. and Rosén, A. S.",
volume="7",
number="3",
pages="224-228",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0007-1293",
doi="",
url="http://dx.doi.org/"
}