@article{ref1,
title="Gang organization and crimes committed by gangs",
journal="Psychologische praxis",
year="1961",
author="Joray, R.",
volume="28",
number="",
pages="1-79",
abstract="<p>[Abstract unavailable]</p> <p>Language: de</p>",
language="de",
issn="0079-7413",
doi="",
url="http://dx.doi.org/"
}