@article{ref1,
title="Urban Trees and Roadside Safety",
journal="Journal of transportation engineering",
year="1989",
author="Turner, D. S. and Mansfield, ER",
volume="116",
number="1",
pages="90-104",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0733-947X",
doi="",
url="http://dx.doi.org/"
}