@article{ref1,
title="Mercury vapors in dental offices",
journal="Freie Zahnarzt Der",
year="1972",
author="Schweisheimer, W.",
volume="16",
number="9",
pages="27-28",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0340-1766",
doi="",
url="http://dx.doi.org/"
}