@article{ref1,
title="A Mathematical-Model of A Non-Signalized Pedestrian Crossing",
journal="Transportation science",
year="1981",
author="Griffiths, JD",
volume="15",
number="3",
pages="222-232",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0041-1655",
doi="",
url="http://dx.doi.org/"
}