@article{ref1,
title="Visual Orientation: Facts and Hypotheses",
journal="International journal of aviation psychology",
year="1993",
author="Roscoe, Stanley N.",
volume="3",
number="3",
pages="221-229",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="1050-8414",
doi="10.1207/s15327108ijap0303_4",
url="http://dx.doi.org/10.1207/s15327108ijap0303_4"
}