@article{ref1,
title="Lethal carbon monoxide poisoning during exposure to earth gas",
journal="Polski Tygodnik Lekarski",
year="1979",
author="Trojanowska, M.",
volume="34",
number="7",
pages="253-254",
abstract="<p>[Abstract unavailable]</p><p>Language: pl</p>",
language="pl",
issn="0032-3756",
doi="",
url="http://dx.doi.org/"
}