@article{ref1,
title="The toxicology of some heavy metals",
journal="Ugeskrift for Laeger",
year="1974",
author="Hansen, J. C.",
volume="136",
number="16",
pages="853-858",
abstract="<p>[Abstract unavailable]</p><p>Language: da</p>",
language="da",
issn="0041-5782",
doi="",
url="http://dx.doi.org/"
}