@article{ref1,
title="Productive industrial visual efficiency",
journal="American journal of optometry and archives of American Academy of Optometry",
year="1946",
author="Soland, E. J.",
volume="23",
number="",
pages="342-351",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-9408",
doi="",
url="http://dx.doi.org/"
}