@article{ref1,
title="Bicycle as a mode of urban transportation",
journal="Traffic engineering",
year="1973",
author="Yu, JC",
volume="43",
number="12",
pages="35-38",
abstract="Factors influencing the acceptance of bicycles, limitations to the use of bicycles, weather effects, choice of bicycle mode, and bikeway design criteria are discussed.<p />",
language="",
issn="0041-0675",
doi="",
url="http://dx.doi.org/"
}