@article{ref1,
title="Unusual foreign bodies associated with cranial trauma",
journal="American journal of roentgenology, radium therapy, and nuclear medicine",
year="1975",
author="Freed, T. A. and Oronzi, V. R. and Frivold, W. P.",
volume="125",
number="4",
pages="839-841",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-9580",
doi="",
url="http://dx.doi.org/"
}