@article{ref1,
title="Effects of experience on patterns of driving skill",
journal="Journal of safety research",
year="1971",
author="Hagen, R. E. and Ellingstad, Vernon S. and Kimball, K. A.",
volume="3",
number="3",
pages="129-135",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0022-4375",
doi="",
url="http://dx.doi.org/"
}