@article{ref1,
title="Visibility of red, green, amber and white signal lights in a highway scene",
journal="Australian journal of optometry",
year="1967",
author="Allen, Merrill J. and Strickland, Jerald and Adams, Anthony J.",
volume="50",
number="5",
pages="130-134",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0045-0642",
doi="10.1111/j.1444-0938.1967.tb03622.x",
url="http://dx.doi.org/10.1111/j.1444-0938.1967.tb03622.x"
}