@article{ref1,
title="Traffic Safety",
journal="Traffic quarterly",
year="1963",
author="Ellis, PW",
volume="17",
number="1",
pages="133-133",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0041-0713",
doi="",
url="http://dx.doi.org/"
}