@article{ref1,
title="Disasters suffered during the past twenty years and measures against them",
journal="Japanese railway engineering",
year="1987",
author="Katayose, N.",
volume="27",
number="2",
pages="21-24",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0448-8938",
doi="",
url="http://dx.doi.org/"
}