@article{ref1,
title="Improving Steep Bends as Hairpin Curves on Mountainous Roads -- Discussion",
journal="Journal of transportation engineering",
year="1992",
author="Garcia, A. and Conesa, M",
volume="118",
number="6",
pages="882-884",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0733-947X",
doi="",
url="http://dx.doi.org/"
}