@article{ref1,
title="Noise control legislation",
journal="Journal of the Air Pollution Control Association",
year="1973",
author="Smith, W. A.",
volume="23",
number="4",
pages="251-256",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-2470",
doi="",
url="http://dx.doi.org/"
}