@article{ref1,
title="Is there a change in the etiology of craniofacial fractures?",
journal="Fortschritte der Kiefer- und Gesichts-Chirurgie",
year="1991",
author="Neumann, H. J.",
volume="36",
number="",
pages="9-11",
abstract="<p>[Abstract unavailable]</p> <p>Language: de</p>",
language="de",
issn="0071-7916",
doi="",
url="http://dx.doi.org/"
}