@article{ref1,
title="Symptoms of Fatigue and Coping Strategies in International Pilots",
journal="International journal of aviation psychology",
year="1997",
author="Petrie, Keith J. and Dawson, Alexander G.",
volume="7",
number="3",
pages="251-258",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="1050-8414",
doi="10.1207/s15327108ijap0703_5",
url="http://dx.doi.org/10.1207/s15327108ijap0703_5"
}