@article{ref1,
title="Congestion charging. Walking classes also need road space reallocation",
journal="British medical journal: BMJ",
year="2003",
author="Joffe, Michael and Mindell, Jennifer",
volume="326",
number="7394",
pages="884-884",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0959-8138",
doi="10.1136/bmj.326.7394.884",
url="http://dx.doi.org/10.1136/bmj.326.7394.884"
}