@article{ref1,
title="Accidents caused by gas at a constant pressure",
journal="Revista Brasileira de Anestesiologia",
year="1970",
author="Spiegel, P.",
volume="20",
number="4",
pages="563-569",
abstract="<p>[Abstract unavailable]</p> <p>Language: pt</p>",
language="pt",
issn="0034-7094",
doi="",
url="http://dx.doi.org/"
}