@article{ref1,
title="Queues for A Fixed-Cycle Traffic Light",
journal="Annals of mathematical statistics",
year="1960",
author="Newell, GF",
volume="31",
number="3",
pages="589-597",
abstract="[Abstract unavailable]  Language: en",
language="",
issn="0003-4851",
doi="",
url="http://dx.doi.org/"
}