@article{ref1,
title="Just noticeable differences in some vehicle handling variables",
journal="Human factors",
year="1968",
author="Joubert, P. N. and Hoffmann, E. R.",
volume="10",
number="3",
pages="263-272",
abstract="Abstract unavailable.",
language="",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}