@article{ref1,
title="Oral and maxillofacial injuries and associated head injuries",
journal="Oral surgery, oral medicine, and oral pathology",
year="1952",
author="Burch, R. J.",
volume="5",
number="11",
pages="1157-1165",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0030-4220",
doi="",
url="http://dx.doi.org/"
}