@article{ref1,
title="Toward a Human-Centered Aircraft Automation Philosophy",
journal="International journal of aviation psychology",
year="1991",
author="Billings, C. E.",
volume="1",
number="4",
pages="261-270",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="1050-8414",
doi="10.1207/s15327108ijap0104_1",
url="http://dx.doi.org/10.1207/s15327108ijap0104_1"
}