@article{ref1,
title="Cluster effect in initially homogeneous traffic flow",
journal="Physical review E, Statistical physics, plasmas, fluids, and related interdisciplinary topics",
year="1993",
author="Kerner, Boris S. and Konhäuser, P",
volume="48",
number="4",
pages="R2335-R2338",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1063-651X",
doi="",
url="http://dx.doi.org/"
}