@article{ref1,
title="Changes of behavior of the drug addict in recent times",
journal="Landarzt",
year="1967",
author="Schrappe, O.",
volume="43",
number="21",
pages="1003-1009",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0023-7728",
doi="",
url="http://dx.doi.org/"
}