@article{ref1,
title="Approaches to Operational Problems in Street and Highway Traffic: A Review",
journal="Operations research",
year="1956",
author="Gerlough, DL and Mathewson, J. H.",
volume="4",
number="1",
pages="32-41",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0030-364X",
doi="",
url="http://dx.doi.org/"
}