@article{ref1,
title="Urban exposure to carbon monoxide",
journal="Archives of environmental health",
year="1972",
author="Godin, G. and Wright, G. and Shephard, R. J.",
volume="25",
number="5",
pages="305-313",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0003-9896",
doi="",
url="http://dx.doi.org/"
}