@article{ref1,
title="The magnitude and direction of forces that man can exert in operating aircraft emergency exits",
journal="Human factors",
year="1959",
author="McFadden, E. B. and Swearingen, J. J. and Wheelwright, CD",
volume="1",
number="4",
pages="16-27",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}