@article{ref1,
title="Bicycle development policy under mixed traffic environment of China",
journal="IATSS research",
year="1999",
author="Mao, Baohua and Xiao, G and Xu, Haiyong",
volume="23",
number="2",
pages="62-69",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0386-1112",
doi="",
url="http://dx.doi.org/"
}