@article{ref1,
title="Aircraft ground emergency exit design considerations",
journal="Human factors",
year="1961",
author="Roebuck, JAJ and Levedahl, BH",
volume="3",
number="3",
pages="174-209",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}