@article{ref1,
title="Foreign body (lead pencil) in the maxillary sinus",
journal="Journal of laryngology and otology",
year="1968",
author="Sinha, S. N.",
volume="82",
number="5",
pages="473-476",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-2151",
doi="",
url="http://dx.doi.org/"
}