@article{ref1,
title="Fire alarm system without alarm",
journal="Health estate",
year="1993",
author="Angst, H. B.",
volume="47",
number="6",
pages="2-3",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0957-7742",
doi="",
url="http://dx.doi.org/"
}