@article{ref1,
title="Studies of helicopter pilot performance. I. The analysis of maneuver dimensions",
journal="Human factors",
year="1965",
author="Zavala, A. and Locke, E. A. and Van Cott, H. P. and Fleishman, E. A.",
volume="7",
number="3",
pages="273-283",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}