@article{ref1,
title="Unrecognized symptoms of depression",
journal="Crisis",
year="1994",
author="Clark, D. C. and Kerkhof, Ad J. F. M.",
volume="15",
number="1",
pages="2-3",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0227-5910",
doi="",
url="http://dx.doi.org/"
}