@article{ref1,
title="Urban cycling - On or off the road?",
journal="Transportation quarterly",
year="2002",
author="Yeates, M",
volume="56",
number="4",
pages="11-11",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0278-9434",
doi="",
url="http://dx.doi.org/"
}