@article{ref1,
title="The loss, the central symptom of depressive syndromes",
journal="Zeitschrift für klinische Psychologie und Psychotherapie",
year="1974",
author="Lenz, Helge",
volume="22",
number="1",
pages="39-44",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0300-869X",
doi="",
url="http://dx.doi.org/"
}