@article{ref1,
title="Life difficulties and pre-suicidal limit",
journal="Wiener Zeitschrift für Nervenheilkunde und Deren Grenzgebiete",
year="1967",
author="Ringel, E.",
volume="25",
number="2",
pages="388-401",
abstract="<p>[Abstract unavailable]</p> <p>Language: de</p>",
language="de",
issn="0043-5384",
doi="",
url="http://dx.doi.org/"
}