@article{ref1,
title="Traumatic pneumocephalus",
journal="British journal of surgery",
year="1974",
author="Briggs, M.",
volume="61",
number="4",
pages="307-312",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0007-1323",
doi="",
url="http://dx.doi.org/"
}