@article{ref1,
title="Hydrogen sulfide poisoning in shale oil industry",
journal="AMA archives of industrial hygiene and occupational medicine",
year="1951",
author="Ahlborg, G. Jr",
volume="3",
number="3",
pages="247-266",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0096-6703",
doi="",
url="http://dx.doi.org/"
}