@article{ref1,
title="Poisons: how does man protect himself?",
journal="Bibliotheca Nutritio et Dieta",
year="1987",
author="Hopff, W. H.",
volume="ePub",
number="41",
pages="76-83",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0067-8198",
doi="",
url="http://dx.doi.org/"
}