@article{ref1,
title="Epidemiologic study of mid-face fractures",
journal="Stomatologie der DDR",
year="1984",
author="Zerweck, R.",
volume="34",
number="1",
pages="32-37",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0302-4725",
doi="",
url="http://dx.doi.org/"
}