@article{ref1,
title="Sprinkler systems",
journal="Specifying Engineer",
year="1978",
author="Oliverson, R. L.",
volume="40",
number="6",
pages="111-115",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0164-5242",
doi="",
url="http://dx.doi.org/"
}