@article{ref1,
title="Visual requirements for automobile drivers",
journal="California and western medicine",
year="1931",
author="Weymann, M. F.",
volume="35",
number="2",
pages="101-103",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0093-4038",
doi="",
url="http://dx.doi.org/"
}