@article{ref1,
title="The U.S. experience with sprinklers: who has them? How well do they work?",
journal="NFPA journal",
year="1993",
author="Hall, J. R. Jr",
volume="87",
number="6",
pages="44-5, 47",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1054-8793",
doi="",
url="http://dx.doi.org/"
}