@article{ref1,
title="Evoked brain response as a measure of human sleep and wakefulness",
journal="Aerospace medicine",
year="1967",
author="Tepas, D. I.",
volume="38",
number="2",
pages="148-153",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}