@article{ref1,
title="An unusual example of spontaneous bladder gas",
journal="Lyon médical",
year="1968",
author="Neidhardt, J. H. and Guelpa, G. and Jaques, J.",
volume="219",
number="29",
pages="125-128",
abstract="<p>[Abstract unavailable]</p> <p>Language: fr</p>",
language="fr",
issn="0024-7790",
doi="",
url="http://dx.doi.org/"
}