@article{ref1,
title="Multiple Entries in Traffic",
journal="Journal of the society for industrial and applied mathematics",
year="1963",
author="Jewell, WS",
volume="11",
number="4",
pages="872-885",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0368-4245",
doi="",
url="http://dx.doi.org/"
}