@article{ref1,
title="A partial theory of sleep. A novel view of its phenomenology and organization",
journal="European neurology",
year="1986",
author="Koella, W. P.",
volume="25",
number="Suppl 2",
pages="9-17",
abstract="The various stages of sleep are characterized by specific vigilance profiles across the universe of available behavioral systems. The induction and structuring of sleep and its adaptation to a variety of internal needs is the result of a general vigilance-controlling apparatus.<p /><p>Language: en</p>",
language="en",
issn="0014-3022",
doi="",
url="http://dx.doi.org/"
}