@article{ref1,
title="Urinary bladder harboring mechanical pencil",
journal="Virginia medical monthly",
year="1959",
author="Jacobs, F. M. and Huff, W. B. and Richards, P. A.",
volume="86",
number="5",
pages="274-275",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0042-6644",
doi="",
url="http://dx.doi.org/"
}