@article{ref1,
title="Jamming transition in the traffic-flow model with two-level crossings",
journal="Physical review E, Statistical physics, plasmas, fluids, and related interdisciplinary topics",
year="1993",
author="Nagatani, Takashi",
volume="48",
number="5",
pages="3290-3294",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1063-651X",
doi="",
url="http://dx.doi.org/"
}