@article{ref1,
title="Sleep patterns in depression. Longitudinal study of six patients and brief review of literature",
journal="Journal of nervous and mental disease",
year="1971",
author="Lowy, F. H. and Cleghorn, J. M. and McClure, D. Jake",
volume="153",
number="1",
pages="10-26",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-3018",
doi="",
url="http://dx.doi.org/"
}