@article{ref1,
title="On a jaw fractures. Classification and epidemiology",
journal="Tandlaegebladet",
year="1971",
author="Petersen, J. K.",
volume="75",
number="9",
pages="780-802",
abstract="<p>[Abstract unavailable]</p><p>Language: da</p>",
language="da",
issn="0039-9353",
doi="",
url="http://dx.doi.org/"
}