@article{ref1,
title="Visible distances and safe approach speeds for night driving",
journal="Ergonomics",
year="1968",
author="Johansson, G. and Rumar, K.",
volume="11",
number="3",
pages="275-282",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0014-0139",
doi="",
url="http://dx.doi.org/"
}