@article{ref1,
title="The visual requirements of motor drivers: Report of American Medical Association",
journal="Clinical and experimental optometry",
year="1925",
author="",
volume="7",
number="7",
pages="186-187",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0816-4622",
doi="10.1111/j.1444-0938.1925.tb00733.x",
url="http://dx.doi.org/10.1111/j.1444-0938.1925.tb00733.x"
}