@article{ref1,
title="Use of the spectral characteristics of the EEG and its derivative in aviation physiology",
journal="Zhurnal vyssheĭ nervnoĭ deyatelnosti imeni I P Pavlova",
year="1971",
author="Klochkov, A. M. and Elkin, P. A. and Zhelezniakov, V. D.",
volume="21",
number="2",
pages="560-565",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0044-4677",
doi="",
url="http://dx.doi.org/"
}