@article{ref1,
title="Safety on the highway: a problem of vision, visibility, and color",
journal="American journal of ophthalmology",
year="1957",
author="Birren, F.",
volume="43",
number="2",
pages="265-270",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-9394",
doi="",
url="http://dx.doi.org/"
}