@article{ref1,
title="Research on the effect of nonlinearities on tracking performance. AMRL-TR-67-9",
journal="Aerospace medical research laboratories technical reports",
year="1967",
author="Graham, D.",
volume="",
number="",
pages="1-73",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0192-317X",
doi="",
url="http://dx.doi.org/"
}