@article{ref1,
title="Reports on Causes of Accidents on Pennsylvania Turnpike",
journal="Pennsylvania medical journal",
year="1961",
author="No Author(s) Listed, ",
volume="64",
number="6",
pages="780-780",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0096-0667",
doi="",
url="http://dx.doi.org/"
}