@article{ref1,
title="Crossing guard analysis: technical note",
journal="ITE journal",
year="1989",
author="Loggins, J.",
volume="59",
number="7",
pages="45-47",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0162-8178",
doi="",
url="http://dx.doi.org/"
}