@article{ref1,
title="The UL label: what does it really mean?",
journal="Health devices",
year="1973",
author="",
volume="2",
number="3",
pages="49-60 passim",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0046-7022",
doi="",
url="http://dx.doi.org/"
}