@article{ref1,
title="Maxillofacial injuries in polytrauma",
journal="World journal of surgery",
year="1983",
author="Spiessl, B.",
volume="7",
number="1",
pages="96-100",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0364-2313",
doi="",
url="http://dx.doi.org/"
}