@article{ref1,
title="An extended model for car-following",
journal="Transportation research",
year="1968",
author="Bexelius, Sten",
volume="2",
number="1",
pages="13-21",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0041-1647",
doi="10.1016/0041-1647(68)90004-X",
url="http://dx.doi.org/10.1016/0041-1647(68)90004-X"
}