@article{ref1,
title="A case of retention of a bullet in the maxillary sinus",
journal="Archivio Stomatologico (Napoli)",
year="1972",
author="Tartaro, S. and Riccio, C. and Gaetani, B.",
volume="13",
number="3-4",
pages="165-177",
abstract="<p>[Abstract unavailable]</p><p>Language: it</p>",
language="it",
issn="0004-0320",
doi="",
url="http://dx.doi.org/"
}