@article{ref1,
title="Principles of toxicological methods",
journal="Arzneimittel-Forschung",
year="1957",
author="Druckrey, H.",
volume="7",
number="8",
pages="449-456",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0004-4172",
doi="",
url="http://dx.doi.org/"
}