@article{ref1,
title="Epidemiological bases for possible air quality criteria for carbon monoxide",
journal="Journal of the Air Pollution Control Association",
year="1969",
author="Goldsmith, J. R. and Cohen, S. I.",
volume="19",
number="9",
pages="704-713",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-2470",
doi="",
url="http://dx.doi.org/"
}