@article{ref1,
title="Research note: the interactions among stress, vigilance, and task complexity",
journal="Human factors",
year="1975",
author="Coulter, X. B. and Kennedy, R. S.",
volume="17",
number="1",
pages="106-109",
abstract="Abstract unavailable.",
language="",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}