@article{ref1,
title="The bereavement of the widowed",
journal="Diseases of the nervous system",
year="1971",
author="Clayton, Paula J. and Halikes, J. A. and Maurice, W. L.",
volume="32",
number="9",
pages="597-604",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0012-3714",
doi="",
url="http://dx.doi.org/"
}