@article{ref1,
title="Suicide attempts and farewell letters of adolescents",
journal="Sozial und Praventivmedizin",
year="1975",
author="Biener, K. and Burger, C.",
volume="20",
number="5",
pages="229-229",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0303-8408",
doi="",
url="http://dx.doi.org/"
}