@article{ref1,
title="The Sampling of Road Traffic",
journal="Applied statistics",
year="1957",
author="Tanner, JC",
volume="6",
number="3",
pages="161-170",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0035-9254",
doi="",
url="http://dx.doi.org/"
}