@article{ref1,
title="Carbon monoxide and human vigilance. A deleterious effect of present urban concentrations",
journal="Archives of environmental health",
year="1971",
author="Horvath, S. M. and Dahms, T. E. and O'Hanlon, J. F.",
volume="23",
number="5",
pages="343-347",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0003-9896",
doi="",
url="http://dx.doi.org/"
}