@article{ref1,
title="Sonar doppler discrimination and the effect of a visual alertness indicator upon detection of auditory sonar signals in a sonar watch",
journal="Human factors",
year="1965",
author="O'Hanlon, J. Jr and Schmidt, A. and Baker, C. H.",
volume="7",
number="2",
pages="129-139",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}