@article{ref1,
title="Research on Road Safety and Traffic Flow",
journal="Operational research quarterly (1950)",
year="1950",
author="Smeed, R. J. and Bennett, G. T.",
volume="1",
number="3",
pages="46-47",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="1473-284X",
doi="",
url="http://dx.doi.org/"
}