@article{ref1,
title="A study of pedestrian safety behavior using activity sampling",
journal="Traffic safety research review",
year="1967",
author="Duffy, DJ and Fleig, PH",
volume="11",
number="4",
pages="106-111",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0564-0741",
doi="",
url="http://dx.doi.org/"
}