@article{ref1,
title="Suicide and mass urban transit",
journal="Suicide and life-threatening behavior",
year="1991",
author="Berman, A. L.",
volume="21",
number="2",
pages="204-211",
abstract="Abstract unavailable.",
language="",
issn="0363-0234",
doi="",
url="http://dx.doi.org/"
}