@article{ref1,
title="Foreign bodies in the bladder",
journal="Zeitschrift für Urologie und Nephrologie",
year="1976",
author="Dittel, E.",
volume="69",
number="6",
pages="447-447",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0044-3611",
doi="",
url="http://dx.doi.org/"
}