@article{ref1,
title="Relation of fatigue to time and motion study",
journal="American journal of optometry and archives of American Academy of Optometry",
year="1951",
author="Bruere, W. W.",
volume="28",
number="7",
pages="372-377",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-9408",
doi="",
url="http://dx.doi.org/"
}