@article{ref1,
title="Curve design and tests on the pennsylvania turnpike",
journal="Highway Research Board proceedings",
year="1940",
author="Stonex, K.a. and Noble, C. M. and Moyer, R.a. and Barnett, J.",
volume="",
number="",
pages="-",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0096-1027",
doi="",
url="http://dx.doi.org/"
}