@article{ref1,
title="Psychological theories on the causes and motivation of suicide",
journal="Wiadomosci Lekarskie",
year="1983",
author="Krupka-Matuszczyk, I.",
volume="36",
number="15",
pages="1287-1290",
abstract="<p>[Abstract unavailable]</p><p>Language: pl</p>",
language="pl",
issn="0043-5147",
doi="",
url="http://dx.doi.org/"
}