@article{ref1,
title="A theoretical model for distributions of speeds and time-headways on two-lane roads",
journal="Transportation and traffic theory",
year="1993",
author="Heidemann, D.",
volume="12",
number="",
pages="523-537",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="",
doi="",
url="http://dx.doi.org/"
}