@article{ref1,
title="An overview of public transportation and the elderly: new directions for social policy",
journal="Gerontologist",
year="1974",
author="Bell, W. G. and Olsen, W. T.",
volume="14",
number="4",
pages="324-330",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0016-9013",
doi="",
url="http://dx.doi.org/"
}