@article{ref1,
title="Psychological, psychophysiological, and biochemical correlates of prolonged sleep deprivation",
journal="American journal of psychiatry",
year="1969",
author="Kollar, E. J. and Pasnau, R. O. and Rubin, R. T. and Naitoh, P. and Slater, G. G. and Kales, A.",
volume="126",
number="4",
pages="488-497",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-953X",
doi="",
url="http://dx.doi.org/"
}