@article{ref1,
title="Effects of Manual and Autopilot Control on Mental Workload and Vigilance During Simulated General Aviation Flight",
journal="Transportation human factors",
year="1999",
author="Masalonis, Anthony J. and Duley, Jacqueline A. and Parasuraman, Raja",
volume="1",
number="2",
pages="187-200",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="1093-9741",
doi="10.1207/sthf0102_7",
url="http://dx.doi.org/10.1207/sthf0102_7"
}