@article{ref1,
title="Alterations of sleep pattern in psychiatric disorder",
journal="Canadian Psychiatric Association Journal",
year="1968",
author="Ward, J. A.",
volume="13",
number="3",
pages="249-257",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0008-4824",
doi="",
url="http://dx.doi.org/"
}