@article{ref1,
title="Is a spate of suicides a cluster?",
journal="Perceptual and motor skills",
year="1990",
author="Kirch, M. R. and Lester, David",
volume="70",
number="1",
pages="46-46",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0031-5125",
doi="",
url="http://dx.doi.org/"
}