@article{ref1,
title="Carbon monoxide exposures from snow melting machines",
journal="American Industrial Hygiene Association journal",
year="1970",
author="First, M. W. and Murphy, R. L. Jr",
volume="31",
number="6",
pages="754-757",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-8894",
doi="",
url="http://dx.doi.org/"
}