@article{ref1,
title="10 years of studies in prevention of drug problems in adolescents",
journal="Zeitschrift fuer Krankenpflege",
year="1976",
author="Biener, K.",
volume="69",
number="2",
pages="49-51",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0044-2941",
doi="",
url="http://dx.doi.org/"
}