@article{ref1,
title="Conceptual environment for railway safety",
journal="Indian railways",
year="2010",
author="Ghosh, Kumar",
volume="56",
number="4",
pages="19-20",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0019-6274",
doi="",
url="http://dx.doi.org/"
}