@article{ref1,
title="Variability in human performance",
journal="Ergonomics",
year="2015",
author="McLeod, Ron",
volume="59",
number="2",
pages="328-329",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0014-0139",
doi="10.1080/00140139.2015.1067483",
url="http://dx.doi.org/10.1080/00140139.2015.1067483"
}