@article{ref1,
title="Monitoring of complex visual displays: ii. effects of visual load and response complexity on human vigilance",
journal="Human factors",
year="1961",
author="Adams, Julie A. and Stenson, H. H. and Humes, J. M.",
volume="3",
number="4",
pages="213-221",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}