@article{ref1,
title="The effect of signal rate on performance in two kinds of vigilance task",
journal="Human factors",
year="1968",
author="Mackworth, J. F.",
volume="10",
number="1",
pages="11-17",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}