@article{ref1,
title="Carbon monoxide exposures of Boston bicyclists",
journal="Journal of the Air Pollution Control Association",
year="1976",
author="Kleiner, B. C. and Spengler, J. D.",
volume="26",
number="2",
pages="147-149",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-2470",
doi="",
url="http://dx.doi.org/"
}