@article{ref1,
title="Development of breakaway utility poles",
journal="Accident analysis and prevention",
year="1980",
author="Labra, JT",
volume="12",
number="4",
pages="314-315",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0001-4575",
doi="",
url="http://dx.doi.org/"
}