@article{ref1,
title="Theoretical Studies and Operational Research on Traffic and Traffic Congestion",
journal="Bulletin of the International Statistical Institute",
year="1958",
author="Smeed, R. J.",
volume="36",
number="4",
pages="347-375",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0074-8609",
doi="",
url="http://dx.doi.org/"
}