@article{ref1,
title="The Use of Autonomic Components to Improve Cardiovascular Assessment of Mental Workload in Flight",
journal="International journal of aviation psychology",
year="1999",
author="Backs, Richard W. and Lenneman, John K. and Sicard, Jamie L.",
volume="9",
number="1",
pages="33-47",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="1050-8414",
doi="10.1207/s15327108ijap0901_3",
url="http://dx.doi.org/10.1207/s15327108ijap0901_3"
}