@article{ref1,
title="Sprinkler standard revisions alter system requirements",
journal="Specifying Engineer",
year="1979",
author="Jensen, R.",
volume="41",
number="5",
pages="68-71",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0164-5242",
doi="",
url="http://dx.doi.org/"
}