@article{ref1,
title="Human performance with homogeneous, patterned, and random alphanumeric displays",
journal="Ergonomics",
year="1976",
author="Hull, A. J.",
volume="19",
number="6",
pages="741-750",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0014-0139",
doi="10.1080/00140137608931588",
url="http://dx.doi.org/10.1080/00140137608931588"
}