@article{ref1,
title="A survey on depth perception of motorists",
journal="Australasian journal of optometry",
year="1958",
author="Ryan, Vernon",
volume="41",
number="1",
pages="18-30",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0817-881X",
doi="10.1111/j.1444-0938.1958.tb00321.x",
url="http://dx.doi.org/10.1111/j.1444-0938.1958.tb00321.x"
}