@article{ref1,
title="Accidents on Oklahoma Turnpikes",
journal="Traffic quarterly",
year="1959",
author="Hoback, WD",
volume="13",
number="4",
pages="546-556",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0041-0713",
doi="",
url="http://dx.doi.org/"
}