@article{ref1,
title="Foreign bodies in the paranasal sinuses as a complication of facial injuries",
journal="British journal of oral surgery",
year="1971",
author="Bradley, P. F.",
volume="8",
number="3",
pages="192-196",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0007-117X",
doi="",
url="http://dx.doi.org/"
}