@article{ref1,
title="Human operator response speed, frequency, and flexibility: a review, analysis and device demonstration. NASA Contract Rep NASA CR-874",
journal="NASA contractor report. NASA CR.",
year="1967",
author="Wargo, M. J. and Kelley, C. R. and Mitchell, M. B. and Prosin, D. J.",
volume="ePub",
number="ePub",
pages="1-74",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0565-7059",
doi="",
url="http://dx.doi.org/"
}