@article{ref1,
title="How to evaluate national suicide programs?",
journal="Crisis",
year="1998",
author="Kerkhof, J. F. and Clark, D. C.",
volume="19",
number="1",
pages="2-3",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0227-5910",
doi="",
url="http://dx.doi.org/"
}