@article{ref1,
title="A Graphical Method for Rapidly Determining Minimum Vehicle Speeds from Skid Marks",
journal="Journal of criminal law and criminology (1931-1951)",
year="1939",
author="Harper, W. W.",
volume="30",
number="1",
pages="96-103",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0885-2731",
doi="",
url="http://dx.doi.org/"
}