@article{ref1,
title="Sleep as restorative process: human clues",
journal="Progress in brain research",
year="1980",
author="Oswald, I.",
volume="53",
number="",
pages="279-288",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0079-6123",
doi="",
url="http://dx.doi.org/"
}