@article{ref1,
title="Is the airport symbol sufficient to convey route information?",
journal="Human factors",
year="1985",
author="Whitaker, L. A.",
volume="27",
number="2",
pages="229-233",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}