@article{ref1,
title="Tough and easy cultures : a conceptual analysis",
journal="Psychiatry interpersonal and biological processes",
year="1948",
author="Arsenian, John and Arsenian, M.",
volume="11",
number="4",
pages="377-385",
abstract="KEYWORDS: Suicide<p /><p>Language: en</p>",
language="en",
issn="0033-2747",
doi="",
url="http://dx.doi.org/"
}