@article{ref1,
title="Low-Maintenance Rubber Crash Cushion",
journal="Journal of transportation engineering",
year="1990",
author="Sicking, Dean L. and Roschke, PN and Ross, H. E.",
volume="116",
number="3",
pages="359-376",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0733-947X",
doi="",
url="http://dx.doi.org/"
}