@article{ref1,
title="Attentuation of the vigilance decrement through stimulation in a second modality",
journal="Human factors",
year="1968",
author="Randel, J. M.",
volume="10",
number="5",
pages="505-512",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}