@article{ref1,
title="Maxillofacial injuries",
journal="British journal of surgery",
year="1969",
author="Walker, R. O.",
volume="56",
number="10",
pages="726-728",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0007-1323",
doi="",
url="http://dx.doi.org/"
}