@article{ref1,
title="Ecg changes after hydrogen sulfide poisoning in 2 workers",
journal="Zentralblatt fur Arbeitsmedizin und Arbeitsschutz",
year="1964",
author="Krekel, K.",
volume="14",
number="",
pages="159-163",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0044-4049",
doi="",
url="http://dx.doi.org/"
}