@article{ref1,
title="New safety laws require vision tests for drivers",
journal="Texas medicine",
year="1968",
author="Lippmann, O.",
volume="64",
number="2",
pages="39-39",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0040-4470",
doi="",
url="http://dx.doi.org/"
}