@article{ref1,
title="Human information processing under varying task demand",
journal="Ergonomics",
year="1973",
author="Cumming, R. W.",
volume="16",
number="5",
pages="581-586",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0014-0139",
doi="",
url="http://dx.doi.org/"
}